please help me this is due tomorrow and I can't figure this out (IXL CC.2 8th grade)
The answer is suppose to look like this (_____,___) AND IF YOU CAN TAKE A SCREENSHOT OF THE GRAPH( picture provided) AND SHOW ME WERE THE LINES MEET.

In a nonexperimental method, relationships between variables are studied by making observations or measures of the variables of interest.

Research without either the manipulation of an independent variable, the random assignment of individuals to conditions or orders of conditions, or both, is referred to as non-experimental research.

The non-experimental study is entirely dependent on variables that the researcher has no control over. By whatever means, they cannot manipulate, control, or change the subjects. Thus, all they can do is continue their research while monitoring and interpreting their subjects.

It is safe to assume that a non-experimental research design is used when there is no specific cause-effect study problem and the researcher simply wants to grasp a topic in depth without constraining it with variables. They examine the natural phenomena as they take place.

Therefore, in a nonexperimental method, relationships between variables are studied by observing or measuring the variables of interest.

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Answer:

3445!

Step-by-step explanation:

hI swear i rember tis question!

Answer:

Step-by-step explanation:

h(4)=2w+3

4=2w+3

Collect like terms (c. I. T)

4-3=2w

1=2w

Divide both sides by 2(d.b.s)

1/2=2w/2

0.5=w

h=0.5w

The probability that the sample mean would differ from the true mean by less than $40 when a sample of 466 persons is randomly selected is approximately 0.9135 or 91.35%.

To solve this problem, we need to use the formula for the standard error of the mean, which is:

Standard Error = Standard Deviation / Square Root of Sample Size

In this case, the standard error would be:

Standard Error = 505 / Square Root of 466
Standard Error = 23.374

Next, we can use the formula for the z-score, which is:

z = (Sample Mean - True Mean) / Standard Error

If we want to find the probability that the sample mean would differ from the true mean by less than 40 dollars, we need to find the area under the normal curve between z = -1.70 and z = 1.70 (since 40 / 23.374 = 1.70).

We can use a standard normal distribution table or calculator to find that this area is approximately 0.9106.

Therefore, the probability that the sample mean would differ from the true mean by less than 40 dollars if a sample of 466 persons is randomly selected is 0.9106, rounded to four decimal places.

We will use the Central Limit Theorem and the z-score formula.

Given the mean per capita income (µ) is $17,145 per annum, the standard deviation (σ) is $505 per annum, and the sample size (n) is 466. We want to find the probability that the sample mean differs from the true mean by less than $40.

First, we need to calculate the standard error (SE) of the sample mean, which is given by:

SE = σ / √n

SE = 505 / √466 ≈ 23.38

Now, we will find the z-scores for the range of $40 from the true mean:

Lower bound: (17,145 - 40 - 17,145) / 23.38 ≈ -1.71
Upper bound: (17,145 + 40 - 17,145) / 23.38 ≈ 1.71

Finally, we will find the probability by looking up the z-scores in a standard normal table or using a calculator:

P(-1.71 < Z < 1.71) ≈ 0.9135

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\(\huge\text{Hey there!}\)

\(\text{How to \bf{calculate midpoint}}?\)

\(\large\text{You can calculate the DISTANCE BETWEEN TWO given END POINTS}\\\large\text{and DIVIDE its RESULT by 2}\)

\(\large\text{Here is the formula: }\mathsf{(\dfrac{x_1 + x_2}{2}, \dfrac{y_1+y_2}{2} )}\)

\(\textsf{Good luck on your assignment and enjoy your day!}\)

~\(\frak{Amphitrite1040:)}\)

\(\large\text{Use an example of it}\downarrow\)

The next score have to be 96 to raise the class average by 1 point.

Explanation :

Let the score of the last paper be x, then

(22(73) + x)/23 = 74

22(73) + x = 74 x 23

1606+ x = 1702

x = 1702- 1606 = 96

x = 96

The next score have to be 96 to raise the class average by 1 point.

Solution in math :

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Answer:

2:3

Step-by-step explanation:

we have 4 green stars

and six red stars

as a ratio, it's

4:6

simplified

2:3

Answer:

D) horizontal compression by a factor of 1/4, and a translation 27 units down

Step-by-step explanation:

Got this right on edge.

Answer:  Choice D

y = -(x - 2)^2 + 7

===========================================================

Explanation:

The highest point is (2, 7) so this is the vertex.

In general, the vertex is (h, k). We can say that h = 2 and k = 7.

The vertex form

y = a(x-h)^2 + k

updates to

y = a(x-2)^2 + 7

----------------

Note that the graph goes through (0,3) which is the y intercept. Plug those x,y coordinates into the equation above to solve for 'a'

y = a(x-2)^2 + 7

3 = a(0-2)^2 + 7

3 = a(-2)^2 + 7

3 = a(4) + 7

3 = 4a + 7

4a+7 = 3

4a = 3-7

4a = -4

a = -4/4

a = -1

----------------

Therefore, we have

y = a(x-2)^2 + 7

update to

y = -1(x-2)^2 + 7

which is the same as

y = -(x - 2)^2 + 7

and that's why the answer is choice D

Answer:

D

Step-by-step explanation:

The equation of a parabola in vertex form is

f(x) = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k ) = (2, 7 ) , then

f(x) = a(x - 2)² + 7

To find a substitute any point on the graph into the equation

Using (0, 3 ) , then

3 = a(0 - 2)² + 7 ( subtract 7 from both sides )

- 4 = 4a ( divide both sides by 4 )

- 1 = a

f(x) = - (x - 2)² + 7 → D

Answer:

4 / 7 of 210 is 120.

(4 / 7) * 210 = 120

Answer:

4/7 x 210

=4x 30=120

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Answer: The price increase = $2,860.

The price of the next model will be $57,860.

Step-by-step explanation:

Given: The next model sports car will cost 5.2% more than the current model.

Current model costs $55,000.

Price increase = 5.2%  of (Cost of current model)

= (0.052) x ($55000)

= $ 2860

So, the price increase = $2860.

Price of the next model = Cost of current model +  price increase

= $(55000+2860)

= $ 57,860

Hence, the price of the next model will be $57,860.

The equation for money collected m for h boxes of chocolate bars sold is m = 30h.

We are given that the band is selling every bar of chocolate for $1.50

Now, they have boxes of chocolate, with every box containing 20 bars of chocolate in them.

Hence if we are going to calculate the amount of money collected on selling one box it will be

20 X $1.5

= $30

We need to find the equation for the amount of money collected based on the number of boxes of chocolate bars sold.

We have been given that money collected should be represented b m while the number of chocolate boxes sold should be represented by h

Now we know that

Money collected = price per box X no.of boxes sold

we have already calculated the price per box hence we get

m = 30h

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Answer:

3.82 thats how much it would be

Step-by-step explanation:

To produce 2 kg of brass, we require 800 g of zinc.

Given that,

Brass is made by combining zinc and copper in a 4:6 ratio.

We want to make 2 kg of brass.

To solve this problem,

Use the fact that the total ratio is 4+6=10 parts, where 4 parts are zinc and 6 parts are copper.

Therefore, the fraction of zinc in brass is 4/10, which simplifies to 2/5. Similarly, the fraction of copper in brass is 6/10, which simplifies to 3/5.

To find the amount of zinc needed to make 2 kg of brass,

We can use the following steps:

Find the total amount of metal needed to make 2 kg of brass:

Total metal = 2 kg = 2000 g                   (∵ 1 kg = 1000 g)

Find the amount of zinc needed based on its fraction in brass:

Zinc = (2/5) x Total metal

       = (2/5) x 2000 g

       = 800 g

Therefore, we need 800 g of zinc to make 2 kg of brass.

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The equation of the line is y = -(3/4)x - 6.

A line is a perfectly straight, one-dimensional shape that extends endlessly in both directions and has no thickness.

Given that, the line passes through the points (-4,-3) and has a slope of -3/4.

The equation of the line in point-slope form is:

y - y₁= m (x -x ₁)

Substitute (x₁,y₁) = (-4,-3) and m = -3/4 into the above equation,

y - (-3) = -3/4 (x - (-4))

y + 3 = -3/4 (x + 4)

y = -(3/4)x -3 -3

y = -(3/4)x - 6

Hence, the equation of the line is y = -(3/4)x - 6.

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Answer:

y = -2/3x - 3

Step-by-step explanation:

y = mx + b

m = slope

(-3,-1) = (x,y)

Plus in the coordinates

-1 = -2/3(-3) + b

negative times negative = positive

-2/3 * -3 = 2

-1 = 2 +b

Use inverse operations

-2 --2

-3 = b

y = -2/3x - 3

Answer:

y = -2/3 x - 3

Step-by-step explanation:

since you have a point and a slope, you can use point - slope form

All the four graphs shows various linear functions.

a. The slope for the linear function representing the relationship between the number of digital cameras sold (x) and total weekly pay (y) is $40 per camera.

b. The slope represents the rate at which Mickey's total pay increases for each additional camera sold. In this case, for every additional camera sold, her total pay increases by $40.

c. The equation for this linear function is y = 40x + 35, where y represents the total weekly pay and x represents the number of digital cameras sold.

d. Mickey's decision to work at Wild Wally's can be considered good based on the given information, as her total pay is increasing at a consistent rate with each additional camera sold.

a. The slope of a linear function represents the rate of change between two variables. In this case, the slope is determined by the change in total weekly pay divided by the change in the number of cameras sold. The change in pay is $395 - $275 = $120, and the change in the number of cameras sold is 11 - 5 = 6. Therefore, the slope is $120/6 = $40 per camera.

b. The slope of $40 per camera means that for each additional camera Mickey sells, her total pay increases by $40. This indicates a consistent linear relationship between the number of cameras sold and her total pay.

c. To determine the equation for the linear function, we use the slope-intercept form y = mx + b, where m represents the slope and b represents the y-intercept. Plugging in the values, we have y = 40x + b. To find the y-intercept, we can use the information from the first week where Mickey sold 5 cameras and earned $275. Substituting these values into the equation, we have 275 = 40(5) + b, which gives us b = 35. Therefore, the equation for the function is y = 40x + 35.

d. Based on the given information, Mickey's decision to work at Wild Wally's seems good. The linear function shows a consistent increase in total weekly pay as the number of cameras sold increases. This indicates a predictable and favorable relationship between her sales performance and pay.

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D.

It's an upside-down ln(x) function that's been shifted 3 units to the left.

Answer:

$132,000

Step-by-step explanation:

Subtract 12% from 100%:  88%.  Now convert 88% into a decimal fraction:  0.88.  Finally, multiply $150,000 by (0.88).  Answer:  $132,000

Using Excel, the probability that 2 or fewer students are left-handed in a random sample of 70 students from a school where 10% of the students are left-handed can be calculated as approximately 0.9999.

To calculate the probability using Excel, we can utilize the binomial distribution function. The binomial distribution is appropriate for situations with a fixed number of independent trials (sampling 70 students) and two possible outcomes (left-handed or not left-handed).

In Excel, the formula to calculate the probability of 2 or fewer left-handed students can be written as "=BINOM.DIST(2, 70, 0.1, TRUE)". Here, "2" represents the number of left-handed students (or fewer) we want to calculate the probability for, "70" is the total number of students in the sample, and "0.1" is the probability of a student being left-handed (10% or 0.10).

Evaluating this formula in Excel yields a probability of approximately 0.9999 when rounded to four decimal places. This implies that there is an extremely high probability (close to 100%) of having 2 or fewer left-handed students in a random sample of 70 students from the school, given that the overall proportion of left-handed students in the school is 10%.

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The area between the graphs is A = e - 1 - sin(1)

To find the exact value of the area between the graphs of y = cos(x) and  \(y = e^x\)for 0 ≤ x ≤ 1, we need to calculate the definite integral of the difference between the two functions over the given interval.

Let's denote the area as A. Then we have:

A = ∫[0, 1] (\(e^x\) - cos(x)) dx

To find the exact value of this integral, we can integrate each term separately:

A = ∫[0, 1] \(e^x\) dx - ∫[0, 1] cos(x) dx

Integrating \(e^x\) gives us:

A = \(e^x\) |[0, 1] - ∫[0, 1] cos(x) dx

The antiderivative of cos(x) is sin(x), so we have:

A = \(e^x\) |[0, 1] - sin(x) |[0, 1]

Evaluating the expressions at the upper and lower limits, we get:

A = \(e^1 - e^0\) - sin(1) + sin(0)

Simplifying further:

A = e - 1 - sin(1)

This is the exact value of the area between the graphs of y = cos(x) and y = \(e^x\) for 0 ≤ x ≤ 1.

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The GCF of the expression 14y² + 7y -21 is 7

The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share.

GCF consist of three words; Greatest, common , factor.

A factor is a number or algebraic expression that divides another number or expression evenly—i.e., with no remainder. For example, the factors of 6 are 1,2,3,6 and the factors of 8 are , 1,2,4,8.

This means the common factors are 1 and 2 and the Greatest is 2.

Similarly, in the expression, 14y² + 7y -21 has Three terms and the greatest common factor between them is 7.

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It has been shown that if A is a symmetric matrix with eigenvalues λ1, λ2, . . . , λn, then the singular values of A are |λ1|, |λ2|, . . . ,|λn|.

To show that the singular values of a symmetric matrix A are |λ1|, |λ2|, . . . ,|λn|, we first need to recall that the singular values of A are the positive square roots of the eigenvalues of \(A^T A\) (where \(A^T\) denotes the transpose of A).

Now, since A is symmetric, we know that \(A^T = A\), which means that \(A^T A = A^2\).

So the eigenvalues of \(A^T A\) are the squares of the eigenvalues of A.

That is, if λ1, λ2, . . . , λn are the eigenvalues of A, then λ1², λ2², . . . , λn² are the eigenvalues of \(A^T A\).

But we also know that the eigenvalues of a symmetric matrix are real, so λ1, λ2, . . . , λn are real numbers.

And since the singular values of A are the positive square roots of the eigenvalues of \(A^T A\), it follows that the singular values of A are |λ1|, |λ2|, . . . ,|λn|. This completes the proof.

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The number 3.23×10^6, expressed in standard decimal notation, is 3,230,000. In scientific notation, a number is expressed as the product of a coefficient and a power of 10.

In this case, the coefficient is 3.23, and the power of 10 is 6. To convert this number into standard decimal notation, we need to multiply the coefficient by the corresponding power of 10. The power of 10, in this case, is 10^6, which means 10 raised to the power of 6. This is equivalent to 1 followed by six zeros: 1,000,000. To obtain the standard decimal notation, we multiply the coefficient, 3.23, by 1,000,000.

Calculating the multiplication, we have:

3.23 × 1,000,000 = 3,230,000.

Hence, the number 3.23×10^6, expressed in standard decimal notation, is 3,230,000. This means that the number is equal to 3.23 million.

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For the given,  F, G and H are the midpoints of the sides of ΔJKL, FG = 37, KL = 48, and GH = 30, then measure of FH = 24, measure of JL = 74, measure of KJ = 60 and measure of FJ = 30.

As given in the question,

F, G, and H are the midpoints of the sides of ΔJKL.

F is the midpoint of KJ, G is the midpoint KL, H is the midpoint of JL

Measure of the required sides are as follow:

FH = (KL / 2)                         (by midpoint theorem)

     = (48/2)

     = 24

JL = 2 x FG             (by midpoint theorem)

   = 2 x 37

   = 74  

KJ = 2 x GH             (by midpoint theorem)

    = 2 x 30

    = 60

FJ = GH = 30            (by midpoint theorem)

Therefore, for the given,  F, G and H are the midpoints of the sides of ΔJKL, FG = 37, KL = 48, and GH = 30, then measure of FH = 24, measure of JL = 74, measure of KJ = 60 and measure of FJ = 30.

The complete question is:

If F, G, and H are the midpoints of the sides  KJ, KL, and JL respectively of ΔJKL, FG = 37, KL = 48, and GH = 30, find each of the following measures. FH= JL= KJ= FJ=​

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Answer:

C. Better measure of center: the median

D. Better measure of spread: the Interquartile range

Answer: #4 (Bottom)

Step-by-step explanation: If you fold the shape in half, both sides would be congruent