I'll give Brainliest!!

Each pair of polygons is similar. Write a similarity statement for the polygons. Then, find the measure of x, the measures of the indicated sides, and the scale factor.

I'll Give Brainliest!!Each Pair Of Polygons Is Similar. Write A Similarity Statement For The Polygons.

Answers

Answer 1

Answer:

C

Step-by-step explanation:

The similarity statement is correct. Because they are similar, AB is equal to EF, so to find x, you do x-2=2.2. Solve that and you get x=0.2


Related Questions

Fundraisers the band boosters had custom t-shirts made for homecoming that they plan to sell for $10 each. they paid a $25.90 setup fee and $8.15 per shirt to have the shirts made. how many shirts do they need to sell to break even?part aif x represents the number of shirts, write an equation to represent the situation.

Answers

The band boosters had custom t-shirts made for homecoming and need to sell a certain number of shirts to cover their expenses. An equation, 10x = 25.90 + 8.15x, can be used to determine the number of shirts they need to sell to break even.

Let's break down the given information and formulate an equation to represent the situation.

The band boosters paid a setup fee of $25.90 and an additional cost of $8.15 per shirt to have the custom t-shirts made. They plan to sell each shirt for $10.

Let's represent the number of shirts they need to sell as 'x'. The cost to produce 'x' shirts would be the sum of the setup fee and the cost per shirt multiplied by the number of shirts:

Cost to produce 'x' shirts = Setup fee + (Cost per shirt × Number of shirts)

Using the given values, the equation becomes:

Cost to produce 'x' shirts = $25.90 + ($8.15 × x)

To break even, the revenue from selling the shirts should equal the cost to produce them. The revenue can be calculated by multiplying the selling price per shirt ($10) by the number of shirts sold:

Revenue from selling 'x' shirts = Selling price per shirt × Number of shirts sold

The equation representing the situation can be written as:

$10x = $25.90 + ($8.15 × x)

Simplifying the equation, we have:

10x = 25.90 + 8.15x

Now we have the equation that represents the situation.

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There are two boxes of cereal in the kitchen.One contains 650 g of cereal and the other one contains 2.68 kg of cereal.How much are there total?

Answers

Answer:

Convert both to either grams or kg..I'm doing kg

650 g is 0.65kg

2.68+0.65 = 3.33 kg

Convert 3.9m^2 into cm^2

I will leave good review!

Convert 3.9m^2 into cm^2I will leave good review!

Answers

Answer:

Step-by-step explanation:

To convert square meters to square centimeters, we need to multiply by the conversion factor (100 cm / 1 m)^2.

So,

3.9 m² = 3.9 × (100 cm / 1 m)²

3.9 m² = 3.9 × 10,000 cm²

3.9 m² = 39,000 cm²

Therefore, 3.9 square meters is equal to 39,000 square centimeters.

On the last algebra test M students scored x on the test and N students
scored y. What does the following expression represent?
Mc+Ny
M+N

Answers

Answer: Y=35x

Step-by-step explanation:

Answer:

Step-by-step explanation:

Mx + Ny represents the total score of M + N students.

Find the length of arc JK.
(Round to the nearest hundredth).

Find the length of arc JK. (Round to the nearest hundredth).

Answers

Convert Ø to radians

30°=π/6

Arc length

s=rØs=2(π/6)s=3.14/3s=1.04ft

Differentiate the given series expansion of f term-by-term to obtain the corresponding series expansion for the derivative of f. 1 If f(x) = Î ( - 1)"4"z" 1+ 4.2 n=0 f'(x) = Preview n=1 License Question 36. Points possible: 1 This is attempt 1 of 1. Differentiate the given series expansion of f term-by-term to obtain the corresponding series expansion for the derivative of f. If f(x) = - - 3n 1 - 23 n=0 f'(x) = Σ Preview n=1 License Question 37. Points possible: 1 This is attempt 1 of 1. Integrate the given series expansion of f term-by-term from zero o x to obtain the corresponding series expansion for the indefinite integral of f. 00 If f(x) = - 8x7 (1 +28)2 Ż ( - 1)"8n.q8n – 1 n=0 Ś f(t)dt = { Preview n=1 License Question 38. Points possible: 1 This is attempt 1 of 1. Use term-by-term differentiation or integration to find a power series centered at x = 0 for: f(x) = ln(1 + x) = Σ Preview n=0

Answers

a. all solutions contain (0,0), we note that when x = 0, y = 0 + C(0) = 0 for any value of C. b. the particular solution is y = x + x = 2x. c. There are no horizontal asymptotes because y approaches infinity as x approaches infinity and negative infinity as x approaches negative infinity.

(a) To verify that y = x + Cx, x = -C and C = 0 is a general solution, we substitute y = x + Cx into the differential equation:

dxdy = x*(x + Cx) - (x + Cx)^2 = x^2 - C^2x^2

The right-hand side simplifies to (1 - C^2)x^2, which is a function of x only. Therefore, y = x + Cx is a solution for any value of C, including C = 0.

To show that all solutions contain (0,0), we note that when x = 0, y = 0 + C(0) = 0 for any value of C.

(b) To find the particular solution that passes through (1,2), we plug in x = 1 and y = 2 into the general solution:

y = x + Cx

2 = 1 + C*1

C = 1

So the particular solution is y = x + x = 2x.

To find dxdy at (0,0), we take the derivative of y with respect to x:

dxdy = 2

(c) To find the vertical asymptotes, we look for values of x such that the denominator of y' (which is y^2 - x^2) becomes zero. This occurs when y = x or y = -x. Thus, the lines y = x and y = -x are vertical asymptotes.

There are no horizontal asymptotes because y approaches infinity as x approaches infinity and negative infinity as x approaches negative infinity.

(d) The particular solution that passes through (1,2) is a straight line with slope 2, passing through the point (0,0). To sketch both branches of this curve, we extend the line through the origin in both directions.

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Find the value of each variable

Find the value of each variable

Answers

Answer is x= 15 y= 7

Step by step

The two “x” variable angles are supplementary so combined they will equal 180 degrees

2(5x -5) + (3x -5) = 180

Distribute

10x -10 + 3x -5 = 180

Combine

13x -15 = 180

Add 15 to both sides to isolate variable

13x -15 + 15 = 180 + 15
Combine

13x = 195

Divide both sides by 13 to solve for x

13/13 x = 195/13

x = 15

The two “y” variable angles are supplementary so combined they will equal 180 degrees

5y + 5 + 20y = 180

Combine

25y + 5 = 180

Subtract 5 from both sides to isolate y

25y +5 -5 = 180 -5

25y = 175

Divide both sides by 25 to solve for y

25/25 y = 175/25

y = 7

Determine the number of significant figures in each measurement. Then, choose the representation of the number where x is in place of the estimated digit from the measurement.a) 14.8mb) $10.25c) 0.05 Ld) 1.000 g/mLe) 6200cmf) 403 kg

Answers

Significant figures with representation of x are a) 14.8 m = 14.x m. b) $10.25 = 10.2x. c) 0.05 L = 0.0x L. d) 1.000 g/mL = 1.00x g/mL. e)  6200cm = 6200x cm. f)  403 kg = 40x kg.

a) 14.8m has 3 significant figures. Representation with x in place of estimated digit: 14.x m. b) $10.25 has 4 significant figures. Representation with x in place of estimated digit: 10.2x. c) 0.05 L has 1 significant figure. Representation with x in place of estimated digit: 0.0x L. d) 1.000 g/mL has 4 significant figures. Representation with x in place of estimated digit: 1.00x g/mL. e) 6200cm has 2 significant figures. Representation with x in place of estimated digit: 6200x cm. f) 403 kg has 3 significant figures. Representation with x in place of estimated digit: 40x kg. Significant figures are the digits in a measurement that are reliable and accurate. They provide an indication of the precision of a measurement, and allow us to communicate the level of certainty we have in a particular value. When determining the number of significant figures in a measurement, we typically follow a set of rules. Non-zero digits are always significant, zeros between non-zero digits are significant, and trailing zeros to the right of the decimal point are significant. Zeros at the beginning of a number or to the left of a non-zero digit are not significant. The use of significant figures is important in science and engineering to ensure accurate and reliable measurements. When performing calculations with measurements, the result should be reported with the same number of significant figures as the least precise measurement used in the calculation. In addition, when rounding a number, the last digit should be rounded to the nearest value consistent with the number of significant figures being used. Understanding significant figures is an important part of scientific and mathematical communication, and can help to ensure accuracy and consistency in the reporting of data and calculations.

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TRUE OR FALSE
becomes zero for x=1
PLEASE HELP​

TRUE OR FALSE becomes zero for x=1PLEASE HELP

Answers

true hope this helps

Why do scientists consider RNA the best candidate for the first life-form? Question 13 options: RNA is capable of self-replication and catalysis. RNA has been created in the lab. RNA carries more information than other molecules. RNA is a simple structure.

Answers

RNA's capability to self-replicate and catalyze chemical reactions make it the best candidate for the first life-form.

According to the scientists, RNA is considered the best candidate for the first life-form due to the fact that RNA is capable of self-replication and catalysis. This is possible because RNA can act both as a template to produce copies of itself and also as an enzyme to accelerate chemical reactions. These abilities suggest that RNA could have played a role in the emergence of the first living organisms on Earth.

An RNA molecule has the ability to catalyze reactions, which means that it can speed up chemical reactions without itself being altered. Thus, it is capable of serving as an enzyme. Scientists believe that the first life-form must have been capable of self-replication and catalysis, and RNA is capable of both functions.

This capability is significant because it is fundamental for the origin of life. Hence, RNA is believed to have played a significant role in the emergence of the first living organisms on Earth.

To conclude, RNA's capability to self-replicate and catalyze chemical reactions make it the best candidate for the first life-form.

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RNA is considered the best candidate for the first life-form by scientists because RNA is capable of self-replication and catalysis.

The correct option is the first one due to following reasons:

RNA is capable of self-replication and catalysis. RNA is a nucleic acid composed of nucleotides that are linked through a sugar-phosphate backbone. It can serve as a template for the production of complementary strands, making it capable of self-replication. Furthermore, RNA molecules can act as catalysts, facilitating chemical reactions in the absence of enzymes.RNA is more versatile than other molecules because it is able to store genetic information and catalyze reactions. In the lab, RNA has been created to catalyze reactions and replicate, providing evidence of its capacity for self-replication and catalysis.

As a result, scientists believe that RNA may have played a crucial role in the origins of life on Earth.

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a regular hexagon has side length $6$. if the perimeter and area of the hexagon are $p$ and $a$, respectively, what is the value of $\frac{p^4}{a^2}$?

Answers

If the perimeter and area of the hexagon are $p$ and $a$, respectively, the value of $\frac{p^4}{a^2}$ is 192.

Regular hexagon has side length of 6

Perimeter of regular hexagon is given by 6*(side)

∴Perimeter = 6*(6) = 36

A closed path that covers, encircles, or outlines a one-dimensional length or a two-dimensional shape is called a perimeter.

Area of Regular hexagon is composed of 6 equilateral triangles and is given by,

= 6* (1/2)*6² * √3/2

= 3√3/2 * 36

= 54√3

The size of a patch on a surface is determined by its area. Surface area refers to the area of an open surface or the boundary of a three-dimensional object, whereas the area of a plane region or plane area refers to the area of a form or planar lamina.

So fraction \(\frac{p^4}{a^2}\) = \(\frac{36^4}{(54\sqrt{3})^2 } = \frac{36*36*36*36}{54*54*3}\)  =192.

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A.
22 cm
6.5 cm
5 cm

-
Find volume

A.22 cm6.5 cm5 cm-Find volume

Answers

Answer:

357.5cm³

Step-by-step explanation:

To find the volume of the prism, find the area of the triangle and multiply it by the height

Area of the triangle

a = 1/2 × base × height (of the triangle)a = 1/2 × 22 × 5 = 55cm²

Volume of prism

55 × 6.5 = 357.5cm³

Answer: 357.5cm³

Hope this helps!



The arithmetic sequence as is defined by the formula:

ai = -4910

ai = Ai-1 +8

Find the sum of the first 575 terms in the sequence.

Answers

Answer:

An arithmetic sequence is a sequence such that the difference between two consecutive terms is a constant, and we can call it d.

Then the general recursive relation is:

Aₙ = Aₙ₋₁ + d.

And the sum of the first N terms of this sequence is given by:

S(N) = (N/2)*(2*A₁ + (N - 1)*d)

Where A₁ is the first term of the sequence.

In this case, we have:

A₁ = -4910

Aₙ = Aₙ₋₁ + 8

Then we have: d = 8

(it actually says:

ai = -4910

ai = Ai-1 +8

But that has no actual meaning, so I assumed that the first one was actually the first term of the sequence)

The sum of the first 575 terms of this sequence is given by:

S(575) = (575/2)*(2*(-4910) + (575 - 1)*8) = -1,503,050

which of the following describes a scenario in which a chi-square goodness-of-fit test would be an appropriate procedure to justify the claim? responses a statistician would like to show that one geographical location has a higher proportion of dogs that shed than another geographical location has. the statistician has two independent random samples of dogs from two different geographical locations and has recorded the proportion of dogs that shed in each sample. a statistician would like to show that one geographical location has a higher proportion of dogs that shed than another geographical location has. the statistician has two independent random samples of dogs from two different geographical locations and has recorded the proportion of dogs that shed in each sample. a principal would like to investigate whether more than 50% of the students in a local high school eat in the school cafeteria. the principal has a random sample of individuals within the school and records the proportion of the students who eat lunch in the school cafeteria. a principal would like to investigate whether more than 50% of the students in a local high school eat in the school cafeteria. the principal has a random sample of individuals within the school and records the proportion of the students who eat lunch in the school cafeteria. a campaign manager would like to show that the distribution of individuals within several social economic categories is different than what a newspaper reported. the campaign manager has a random sample of potential voters in a large city and records the number of individuals within each of the categories. a campaign manager would like to show that the distribution of individuals within several social economic categories is different than what a newspaper reported. the campaign manager has a random sample of potential voters in a large city and records the number of individuals within each of the categories. a manager of a water treatment plant would like to investigate whether there is a relat

Answers

a) The campaign manager has a random sample of potential voters in a large city and records the number of individuals within each of the categories.

b) A Chi-Square goodness of fit test.

a) A campaign manager would like to show that the distribution of individuals within several social economic categories is different than what a newspaper reported and that's why we know that the campaign manager has a random sample of potential voters in a large city and records the number of individuals within each of the categories.

Chi-Square goodness of fit is used to find out how the observed value of a given phenomenon is significantly different from the expected value. In Chi-Square goodness of fit test, the sample data is divided into intervals.

In this case, we have one categorical variable which is the distribution of individuals within several social groups. We want to see if the actual distribution of the variable is significantly different from the distribution within several social groups as claimed(expected) by the newspaper.

Hence, we will use chi-square goodness of fit test for this case.

b) A Chi-Square goodness of fit test.

Here the variable is the distribution of individuals purchasing season pass at an amusement park. The variable has 4 categories based on the age group of the individuals.

A tourist company wants to test the actual distribution of individuals within each age group and wants to check if it is significantly different from the expected distribution i.e the one claimed by the amusement park.

The tourist company randomly sampled 200 individuals entering the park.

The proportion of individuals within each group as claimed by the amusement park is given.

Hence, we will use chi-square goodness of fit test to test if the actual distribution within each group is significantly different or not from the claimed distribution.

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Chloe and eduardo are selling wrapping paper for a school fundraiser. customers can buy rolls of plain wrapping paper and rolls of holiday wrapping paper. chole sold 2 rolls of plain wrapping paper and 10 rolls of holiday wrapping paper for a total of $206. eduardo sold 3 rolls of plain wrapping paper and 5 rolls of holiday wrapping paper for a total of $129.

Answers

The cost of plain wrapping paper is $13 and the cost of holiday wrapping paper is $18

Chloe:

Number of plain wrapping paper sold = 2

Number of holiday wrapping paper sold = 10

Total income = $206

Eduardo:

Number of plain wrapping paper sold = 3

Number of holiday wrapping paper sold = 5

Total income = $129

Let x represent the cost of plain wrapping paper and y represent the cost of holiday wrapping paper:

Formulating the equations:

2x+10y = 206-----(1)

3x+5y = 129------(2)

Multiplying (2) with 2 and subtracting with (1) we get:

2x+10y = 206

6x+10y = 258

4x = 52

x = 13

So cost of plain wrapping paper is $13

holiday wrapping paper = $18

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Which of these tables represents a function? A table has values of X and Y. Row 2: X negative 1 and Y 15. Row 3: X negative 2 and Y 6. Row 4: X 0 and Y 15. Row 5: X 4 and Y 6. W. A table has values of X and Y. Row 2:  X 0 and Y 4. Row 3: X 6 and Y 15. Row 4: X 0 and Y 6. Row 5: X negative 2 and Y negative 1. X. A table has values of X and Y. Row 2:  X 4 and Y 0. Row 3: X negative 1 and Y negative 2. Row 4: X 6 and Y negative 2. Row 5: X 6 and Y 15. Y. A table has values of X and Y. Row 2:  X 6 and Y negative 2. Row 3: X 4 and Y 0. Row 4: X 15 and Y negative 1. Row 5: X 4 and Y 3. Z. A. W B. X C. Y D. Z

Answers

Answer:

A. E negitive

Step-by-step explanation:

Answer: x is alys a step behind y so you can make ech difrints by moltapling to ech step

Step-by-step explanation:

#19 4=ax - 14 Need asap

Answers

Answer

4 = ax - 14

18 = ax

x = 18/a or 4

Step-by-step explanation:

Solve for x.
X^2-20x+100=0

Answers

Answer:

x=10

Step-by-step explanation:

x^2-20x+100=0

x^2-20x=-100

x^2=-100+20x

x^2+100=20x

100=10x

x=10

Hope this helps plz hit the crown ;D

How many lines of symmetry does a hexagon have that will reflect it onto itself?

Answers

A regular hexagon has six lines of symmetry to map onto itself using reflections.

The number of lines of symmetry a hexagon have that will reflect it onto itself is 6.

The given shape is hexagon.

A line of symmetry is the line that divides a shape or an object into two equal and symmetrical parts.

A hexagon has six lines of symmetry. Each line of symmetry is a line that divides the hexagon into two equal halves that are reflections of one another. When all six lines of symmetry are present, the hexagon can be reflected over itself.

Therefore, the number of lines of symmetry a hexagon have that will reflect it onto itself is 6.

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Which number line represents the solution of 1/2 b ≥ 4 ?

Which number line represents the solution of 1/2 b 4 ?

Answers

Answer:

Answer D

Step-by-step explanation:

Solve for b:

\(\frac{1}{2}b \geq 4\)

Divide both sides by a half

\(b\geq 8\)

We see that its a greater than or equal too sign, which means the number line has to be facing to the right with a closed circle. Therefore, D is our answer.

Which number line represents the solution of 1/2 b 4 ?

76. 6 25. 5 10. 87 =

What wa Sela' etimate and what i the actual um of the number?

Answers

The estimate for the sum of the numbers is 230, and the actual sum of the numbers is 209.

To estimate the sum of the numbers, we can round each number to the nearest ten and then add them together. When rounding off to the nearest tens, we look at the number at the tenth position. If it is five and above, we round it off to the next nearest tens number and if it is below five, we round it off to the previous nearest tens number.

76 rounds to 80   since 6 is above 5
6 rounds to 10 since 6 is above 5
25 rounds to 30 since 5 is located at 5 and above interval
5 rounds to 10 since 5 is located at 5 and above interval
10 rounds to 10 since 0 is below 5
87 rounds to 90 since 7 is above 5

So, the estimate for the sum of the numbers is: 80 + 10 + 30 + 10 + 10 + 90 = 230

To find the actual sum of the numbers, we simply add them together without rounding:

76 + 6 + 25 + 5 + 10 + 87 = 209

The complete question is: 76. 6 25. 5 10. 87 =

What was Sela's estimate and what is the actual sum of the number?

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Rewrite one eighteenthx3y + seven eighteenthsxy2 using a common factor.

one thirdxy(6x2 + 7y)
one thirdx2y(6x2 + 9y)
one eighteenthxy(x2 + 7y)
one eighteenthx3y2(y + 7)

Answers

Answer:

C

Step-by-step explanation:

1/18 x³y + 7/18 xy²


1/18 xy (x² + 7y)

consider three different processors p1, p2, and p3 executing the same instruction set. p1 has a 3 ghz clock rate and a cpi of 1.5. p2 has a 2.5 ghz clock rate and a cpi of 1.0. p3 has a 4.0 ghz clock rate and has a cpi of 2.2. true or false

Answers

Part a: P2 processors therefore performs the best out of the three.

Part b: Number of Cycles are found.

Part c: New Clock rate for each processors is found.

Explain about the highest performance of processors processors?

High-speed data processing and intricate calculations are capabilities of high-performance computing (HPC).

1.

P1: 3GHz / 1.5 = 2 × 10^9 instructions / second

P2: 2.5GHz / 1.0 = 2.5 × 10^9 instructions  / second

P3: 4GHz / 2.2 = 1.82 × 10^9 instructions  / second

2. Number of Cycles:

P1: 3GHz × 10 = 3 * 10^10 cycles

P2: 2.5GHz × 10 = 2.5 × 10^10 cycles

P3: 4GHz ×10 = 4 ×  10^10 cycles

Number of instructions:

P1: 3GHz × 10 / 1.5 = 2 × 10^10 instructions

P2: 2.5GHz × 10 / 1.0 = 2.5 × 10^10 instructions

P3: 4GHz × 10 / 2.2 = 1.82 × 10^10 instructions

3. Execution time = (Number of instructions * CPI) / (Clock rate)

Therefore, if CPI rises by 20% but we aim to cut the execution time to 30%, we have:

Execution time × 0.7 = (Number of instructions  × CPI × 1.2) / (New Clock rate)

New Clock rate = Clock rate × 1.2 / 0.7 = 1.71 * Clock rate

New Clock rate for every processor:

P1: 3GHz × 1.71 = 5.13 GHz

P2: 2.5GHz × 1.71 = 4.27 GHz

P3: 4GHz × 1.71 = 6.84 GHz

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The correct question is-

Performance:

Consider three different processors, P1 P2 and P3, executing the same instruction set.

P1 has a 3 GHz clock rate and a CPI of 1.5. P2 has a 2.5 GHz clock rate and a CPI of 1.0.

P3 has a 4.0 GHz clock rate and a CPI of 2.2.

1. Which processor has the highest performance expressed in instructions per second?

2. If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions.

3. We are trying to reduce the execution time by 30% but this leads to an

increase of 20% in the CPI. What clock rate should we have to get this time reduction?

A manufacturer of hard safety hats for construction workers is concerned about the mean and the variation of the forces helmets transmit to wearers when subjected to a standard external force. The manufacturer desires the mean force transmitted by helmets to be 800 pounds (or less), well under the 1000-pound legal limit, and the standard deviation to be less than 40. A random sample of 31 helmets was tested and the sample mean and variance were found to be 825 pounds and 2350 pounds2, respectively. The manufacturer wants to know if the data provides sufficient evidence to indicate that the standard deviation is significantly less than 40.
Step 1 of 5: Calculate the test statistic for this problem. Round your answer to two decimal places.
Step 2 of 5: Determine the p-value for a lower one-sided alternative hypothesis (left-tail test). The alternative hypothesis for this problem is H1: Ï2 < 1600 lbs2.
Step 3 of 5: What is the rejection region at the 10% level of significance for the test on the variance for a left-tailed alternative hypothesis? The alternative hypothesis for this problem is H1: Ï2 < 1600 lbs2.
Step 4 of 5: State your conclusion using a significance level of 0.05. The alternative hypothesis for this problem is H1: Ï2 < 1600 lbs2.
Step 5 of 5: Calculate a 90% confidence interval for the variance of force on the helmets. Round your answers to four decimal places.

Answers

Step 1: The test statistic is 56.56.

Step 2: Using a chi-square distribution table with 30 degrees of freedom (n - 1), we find that the p-value is less than 0.0001.

Step 3: The rejection region for a left-tailed test with 30 degrees of freedom at the 10% level of significance is any test statistic less than 18.307.

Step 4: The test statistic of 56.56 is greater than the critical value of 18.307.

Step 5:  The 90% confidence interval for the variance of force on the helmets is [1615.46, 4123.82]

What is Variance?

In statistics, variance is a measure of the spread or dispersion of a set of data points. It is calculated as the average of the squared differences from the mean.

Step 1: To test whether the standard deviation is significantly less than 40, we can use a chi-square test with the null hypothesis H0: \(σ^{2}\) ≥ 1600 lbs² and the alternative hypothesis H1: σ² < 1600 lb\(s^{2}\). The test statistic is:

chi-square = (n - 1) *\(s^{2}\) / \(σ^{2}\)

where n is the sample size, \(s^{2}\) is the sample variance, and \(σ^{2}\) is the population variance under the null hypothesis.

Substituting the given values, we have:

chi-square = (31 - 1) * 2350 / 1600 = 56.56

Rounding to two decimal places, the test statistic is 56.56.

Step 2: To determine the p-value for a left-tailed test, we need to find the area under the chi-square distribution to the left of the test statistic. Using a chi-square distribution table with 30 degrees of freedom (n - 1), we find that the p-value is less than 0.0001.

Step 3: The rejection region for a left-tailed test with 30 degrees of freedom at the 10% level of significance is any test statistic less than 18.307.

Step 4: Since the test statistic of 56.56 is greater than the critical value of 18.307, we reject the null hypothesis and conclude that there is sufficient evidence to indicate that the standard deviation is significantly less than 40 at the 5% level of significance.

Step 5: To calculate a 90% confidence interval for the variance of force on the helmets, we can use the formula:

[(n - 1) * \(s^{2}\)/ chi-square upper, (n - 1) * \(s^{2}\) / chi-square lower]

where chi-square upper and chi-square lower are the upper and lower critical values, respectively, from the chi-square distribution table for 30 degrees of freedom at the 5% level of significance. Substituting the given values, we have:

chi-square upper = 45.722

chi-square lower = 18.307

[(31 - 1) * 2350 / 45.722, (31 - 1) * 2350 / 18.307] = [1615.46, 4123.82]

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Maya is saving money to buy a game. So far she has saved $6, which is two-thirds of the total cost of the game. How much does the game cost?

Answers

Answer:

9 dollars

Step-by-step explanation:

Since 6 is 2/3 of the total price, and half of 6 is 3, add three to 6 and you get 9.

Answer:

9 dollars

Step-by-step explanation:

if 6 dollors==>2/3from the game totall price

1 complete game how much

6÷2/3=9dollars

Area of a circle- pls pls pls help me- I'll give Brainly answer and big points.

Area of a circle- pls pls pls help me- I'll give Brainly answer and big points.

Answers

Answer: The answer is 12.57 because the formula is The area of a circle is pi times the radius squared (A = π r²). Hope this helps.

Step-by-step explanation:

find the measure of the missing angles for f,d,e

find the measure of the missing angles for f,d,e

Answers

Answer:

E= 36 D=102 F=42

Step-by-step explanation:

E= 36 because of the vertical angles theorem, d =102 because of vertical angles theorem, and finally we have f = 42 because all these angles form a straight angle/line which adds up to 180. So before we knew that d=102 and e=36 so we can add those up and we get 138. Then we subtract 132 from the measure of a straight angle (180 degrees), to get f. SO 180-132 =f=42

A number ,a, rounded to 1d. P i 49. 3
Another numder, b, rounded to 1. D. P i 7. 6
what are the lower and upper bound of a - b

Answers

The lower bound of a - b is 41.5 and the upper bound of a - b is 41.9.

The lower bound of a - b can be calculated by subtracting the upper bound of b from the lower bound of a and vice versa for the upper bound.

Lower bound of a = 49.3 - 0.1 = 49.2

Upper bound of b = 7.6 + 0.1 = 7.7

Lower bound of a - b = 49.2 - 7.7 = 41.5

Upper bound of a = 49.3 + 0.1 = 49.4

Lower bound of b = 7.6 - 0.1 = 7.5

Upper bound of a - b = 49.4 - 7.5 = 41.9

So, the lower bound of a - b is 41.5 and the upper bound of a - b is 41.9.

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Rewrite the function f(x) = -2(x+2)²-11 in the form f(x) = ax²+bx+c.
X
S

Rewrite the function f(x) = -2(x+2)-11 in the form f(x) = ax+bx+c.XS

Answers

Answer:

\(\displaystyle{f(x)=-2x^2-8x-19}\)

Step-by-step explanation:

Given the vertex equation:

\(\displaystyle{f(x)=-2(x+2)^2-11}\)

First, apply the perfect square formula, expanding to standard form:

\(\displaystyle{f(x)=-2(x^2+4x+4)-11}\)

Expand -2 in:

\(\displaystyle{f(x)=-2x^2-8x-8-11}\)

Evaluate or simplify:

\(\displaystyle{f(x)=-2x^2-8x-19}\)

Hence,

\(\displaystyle{f(x)=-2x^2-8x-19}\)

Answer:

\(\huge\boxed{\sf f(x) = -2x\² - 8x - 19}\)

Step-by-step explanation:

Given function:

f(x) = -2(x + 2)² - 11

Using formula: (a + b)² = a² + 2ab + b²

f(x) = -2[(x)² + 2(x)(2) + (2)²] - 11

f(x) = -2(x² + 4x + 4) - 11

Distribute

f(x) = -2x² - 8x - 8 - 11

f(x) = -2x² - 8x - 19

\(\rule[225]{225}{2}\)

I need help someone help me plz

I need help someone help me plz

Answers

Answer:

the answer to x is 4

Step-by-step explanation:

.

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