HELPP PLZ WILL MARK BRAINLIEST AGAIN

Answer:

Midpoint = (-2,1)

Step-by-step explanation:

10+(-6) = -4/2 = -2

-1+3 = 2/2 = 1

Midpoint = (-2,1)

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pls:(

Answer: 2,1

Step-by-step explanation:

Answer:

Step-by-step explanation:

In the example, $35,000 divided by $100,000 equals an effective tax rate of 0.35 or 35 percent.

hope this helps! :)

(i don't know if this is 100% correct just so you know)

Answer:

The answer is A) \(y=4x\)

Step-by-step explanation:

This is because y directly corresponds to x, if x is 1, then y = 4, if x is 2, then y = 8 and so on.

If a person were to make $1 trillion over the next 30 years, their earnings per second would be approximately $10,512.35.

To calculate the earnings per second, we need to convert the total earnings of $1 trillion into seconds. There are 30 years in total, and each year has 365 days, with each day consisting of 24 hours, each hour containing 60 minutes, and each minute having 60 seconds. Multiplying these values together, we get:

30 years * 365 days/year * 24 hours/day * 60 minutes/hour * 60 seconds/minute = 946,080,000 seconds

Next, we divide the total earnings of $1 trillion by the number of seconds to find the earnings per second:

$1,000,000,000,000 / 946,080,000 ≈ $10,512.35

Therefore, if we pretend this person had an hourly job that paid $1 trillion over the next 30 years, they would be making approximately $10,512.35 per second. It's worth noting that this calculation assumes a constant rate of earning throughout the 30-year period and does not take into account factors such as taxes or inflation.

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The value of Mean ≈ 341.2

Median ≈ 319

Standard Deviation ≈ 307.8

To find the mean, median, and standard deviation of the number of members per component, we can use statistical software to analyze the data. Here are the results:

Mean:

The mean is the average value of the number of members per component. We calculate it by summing up all the values and dividing by the total number of components.

Mean = (114 + 261 + 319 + 183 + 654 + 313 + 58 + 98 + 335 + 324 + 52 + 125 + 342 + 66 + 321 + 893 + 690 + 798 + 201 + 74 + 632 + 216 + 76 + 155 + 161 + 304 + 530 + 1,110 + 93 + 631 + 75 + 344 + 264 + 1,120 + 122 + 45 + 304 + 192 + 316 + 63) / 39

Mean ≈ 341.2

Median:

The median is the middle value when the components are arranged in ascending order. If there is an even number of components, the median is the average of the two middle values.

Arranging the components in ascending order:

45, 52, 58, 63, 74, 75, 76, 93, 98, 114, 122, 125, 155, 161, 183, 192, 201, 216, 261, 264, 304, 304, 313, 316, 319, 321, 324, 335, 342, 344, 530, 631, 632, 654, 690, 798, 893, 1,110, 1,120

The median is the middle value:

Median ≈ 319

Standard Deviation:

The standard deviation measures the dispersion or spread of the values around the mean.

Using statistical software, we calculate the standard deviation for the given data:

Standard Deviation ≈ 307.8 (rounded to 1 decimal place)

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Answer:

sin=24/=x

Step-by-step explanation:

Answer:

5/3

Step-by-step explanation:

it will be 5 /3

sec theta will be hypotanus/ Adjacent

The mean score of 90, and percentile of Bob's score of 80, gives Bob's exam score as approximately 92.5%

The Z-Score of the 80th percentile is 0.8416

The formula for Z-Score is presented as follows;

\(z = \frac{x - \mu}{ \sigma} \)

Where;

\( \sigma = The \: standard \: deviation\)

\( \mu = The \: mean = 90\%\)

x = The given score

Taking the mean as a proportion, we have;

\( \sigma = \sqrt{\frac{\mu \cdot (1-\mu)}{n}}\)

Which gives;

\( \sigma = \sqrt{\frac{0.9 \times (1-0.9)}{100}}= 0.03\)

Therefore, when z = 0.8416, gives;

\(0.8416 = \frac{x - 0.9}{ 0.03} \)

x = 0.8416 × 0.03 + 0.9 ≈ 0.925

Therefore;

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Answer:

i cant see the choices but i think this is khan academy

Step-by-step explanation:

A.

By using distributive property you can figure out all the answers.

A: 4*3a, 4*2= 12a + 8

B: 4*3a, 4*8= 12a + 32

C: 6*6a, 6*2= 36a + 12

D: 6*6a, 6*8= 36a + 48

Answer:

a =-2/3

Step-by-step explanation:

I can't see the answer choices but I'm going to try helping you.

12a + 8 is like a two step equation make it equal to zero

12a + 8 = 0

Subtract 8 on each side

12a = -8

Now divide by 12 on each side

a = -2/3

Hope this helps!

The study described is a randomized experiment.By randomly assigning different online homework systems to the classes, the researcher can assess the effectiveness of these systems by comparing the pretest and final exam results.

In the study, the math department chair assigns different online homework systems to three out of four college algebra classes while one class does not use any online homework system. This assignment of different treatments (online homework systems) to the classes is a characteristic of a randomized experiment. The key element here is the random assignment of treatments, which allows for a comparison of the effects of the different homework systems on the students' performance.

Based on the information provided, the study described can be classified as a randomized experiment. By randomly assigning different online homework systems to the classes, the researcher can assess the effectiveness of these systems by comparing the pretest and final exam results. Randomized experiments are valuable in establishing causal relationships between variables, in this case, the effectiveness of online homework systems on student performance in college algebra classes.

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Answer:

1.042755456*10^21

Step-by-step explanation:

The amount loaned at 5% interest is $7,500. Let's say the bank loaned out x dollars. The amount loaned at 5% interest is 0.05x dollars, and the amount loaned at 10% interest is 0.10x dollars.

We know that the total interest received in one year was y dollars. We can set up the following equation to represent this information:

0.05x + 0.10(x - 0.05x) = y

Simplifying the right side of this equation, we get:

0.05x + 0.10x - 0.05x = y

0.05x = y

Dividing both sides of this equation by 0.05, we get:

x = y / 0.05

x = 20y

We are given that the total interest received was $y = $1,500. Plugging this value into the equation, we get:

x = 20(1,500)

x = $30,000

Therefore, the amount loaned at 5% interest is $30,000 / 2 = $15,000. However, we are asked for the amount loaned at 5% interest, not 10% interest. So, we need to divide this amount by 2:

$15,000 / 2 = $7,500

Therefore, the amount loaned at 5% interest is $7,500.

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QUESTION:

A bank loaned out $18,000, part of it at the rate of 8% per year and the rest at 16% per year. If the interest received in one year totaled $2000, how much was loaned at 8%?

The volume of the given cube is determined as (q cm)³.

The volume of a cube is calculated from the cube its edge length.

Mathematically, the formula for the volume of a cube is calculated by applying the following formula.

V = L x L x L = L³

where;

The volume of the given cube is calculated as follows;

V = q cm  x q cm x q cm

V = (q cm)³

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Answer:

Step-by-step explanation:

we can subsitiute 3 and -1 for x and y respectively to get 3A - 4 = 2. After this you add 4 to both sides and get 3A = 6. divide by 3 and you get a = 2

Answer:

1 fancy  15 plain

Step-by-step explanation:

F + P = 16

15F +10P = 165

Miltiplu the 1st by  -10:

-10F -10P = -160

15F +  10P = 165

Add both (10p is cancelled)

5F = 5

F =1

16-1 = 15   (15plain)

15 x10 =150

1x15 =15

  150 +15 = 165

1. Three examples of situations where consistency is important:

Healthcare: when treating patients, healthcare providers must follow consistent procedures and protocols to ensure that every patient receives the same level of care.

Financial transaction: when making financial transactions, it is important to follow regular security rules to prevent fraud.

Support rules: Adherence to consistent rules and regulations in sports is essential to ensure fair play and the safety of all participants.

2. The number 0 is important in mathematical systems because it represents the absence of a number and serves as a placeholder. Without zero, our mathematical system would be affected in many ways. For example, writing the number 100 would be difficult without the zero. Without the invention of zero, progress in mathematics would have been delayed.

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Answer:

f(x) = 2(x - 2)² - 1

Step-by-step explanation:

Given the vertex, (2, -1) and the point, (0, 7), we can plug these values into the vertex form of the quadratic function:

f(x) = a(x - h)² + h

where:

vertex = (h, k)

a = determines whether the graph opens up or down, and the wideness or narrowness of the parabola.

h = determines how far left or right the parent function is translated.

k = determines how far up or down the parent function is translated.

We could substitute the given values into the vertex form, and solve for the value of "a":

f(x) = a(x - h)² + h

7 = a(0 - 2)² - 1

7 = a(-2)² - 1

7 = a(4) - 1

Add 1 to both sides:

7 + 1 = a(4) - 1 + 1

8 = 4a

Divide both sides by 4 to solve for a:

8/4 = 4a/4

2 = a

Since a = 2, and the vertex = (2, -1) then we could plug this value into the given function:

f(x) = 2(x - 2)² -1

Attached is a screenshot of the graph where it contains the given points.

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Answer:

50

Step-by-step explanation:

138-88=50

The thickness of the non-reflective coating layer is 9.62 x 10¯⁸ m or 96.2 nm.

From the question we know that :

n = 1.30

λ = 500nm = 5 x 10¯⁷m

The non-reflective coating system is applied on glass and the refractive index of that system should be  nair < ncoating < nglass. The light travels across the air and is refracted by coating film and then refracted again by the glass. For preventing the light got reflected by glass, the thickness of the layer should obey this equation :

2nt = λ/2

t is the thickness of the layer, λ is the wavelength and n is the refractive index of the film.

By substituting the following equation we get

2nt = λ/2

t = 1/4 . ( λ / n )

t = 1/4 . ( 5 x 10¯⁷ / 1.3)

t = 9.62 x 10¯⁸ m

Hence, the thickness of the non-reflective coating layer is 9.62 x 10¯⁸ m or 96.2 nm.

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Based on the given data, the experimental probability of landing open side up is 0.1, landing closed side up is 0.88, and landing on its side is 0.02.

To determine the experimental probability of each outcome (landing open side up, landing closed side up, and landing on its side), we need to calculate the ratio of the number of times the cup landed in each position to the total number of tosses.

Let's calculate the experimental probability for each outcome based on the given table:

1. Landing open side up:

The cup landed open side up 5 times out of 50 tosses.

Experimental Probability = Number of times landed open side up / Total number of tosses

Experimental Probability = 5 / 50

Experimental Probability = 0.1

2. Landing closed side up:

The cup landed closed side up 44 times out of 50 tosses.

Experimental Probability = Number of times landed closed side up / Total number of tosses

Experimental Probability = 44 / 50

Experimental Probability = 0.88

3. Landing on its side:

The cup landed on its side 1 time out of 50 tosses.

Experimental Probability = Number of times landed on its side / Total number of tosses

Experimental Probability = 1 / 50

Experimental Probability = 0.02

Based on the given data, the experimental probability of landing open side up is 0.1, landing closed side up is 0.88, and landing on its side is 0.02. These probabilities indicate the likelihood of each outcome occurring in a toss.

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Consider we need to find the dimensions and volume of the box.

Given:

The shape of the lamp is a rectangular prism.

It measures 14 high, 9 wide, and 3 long.

There is 1 all around the lamp for bubble wrap

To find:

The dimensions and volume of the box.

Solution:

Length of the box is:

\(3+2=5\)

Width of the box is:

\(9+2=11\)

Height of the box is:

\(14+2=16\)

Therefore, the dimensions of the box are 5 by 11 by 16 units.

The volume of the box is:

\(V=l\times w\times h\)

Where, l is length, w is width and h is height.

Putting \(l=5, w=11, h=16\), we get

\(V=5\times 11\times 16\)

\(V=880\)

Therefore, the volume of the box is 880 cubic units.

The volume of the cylindrical solid generated by revolving the region in the first quadrant bounded by the coordinate axes, the curve y = e^x and the line x = ln 9 about the line x = ln 9 is approximately 19.251 cubic units.

To find the volume of the solid generated by revolving, we can use the method of cylindrical shells.

Consider a vertical strip of thickness dx at a distance x from the line x = ln 9. Revolving this strip about the line x = ln 9 will generate a cylindrical shell of radius (ln 9 - x) and height e^x. The volume of this cylindrical shell is given by:

dV = 2π (ln 9 - x) e^x dx

To find the total volume of the solid, we need to integrate dV over the range of x that defines the region of interest. Since the region is bounded by the coordinate axes, we can integrate from x = 0 to x = ln 9. Thus, the total volume of the solid is:

V = ∫0^ln9 2π (ln 9 - x) e^x dx

Using integration by parts, we can evaluate this integral as:

V = 2π [x e^x - e^x] from x = 0 to x = ln 9

V = 2π [(ln 9)(9/e) - (1/e)]

Therefore, the volume of the solid generated by revolving the region in the first quadrant bounded by the coordinate axes, the curve y = e^x and the line x = ln 9 about the line x = ln 9 is approximately 19.251 cubic units.

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Answer:

i wonder why

Step-by-step explanation:

Answer:

609

Step-by-step explanation:

ratio of teachers to students at Priory School =2:27

Let X= total number of both the students and the teacher

Ratio of teacher=( 2/29)X

Ratio of student is (27/29 )X

But total number of teacher = 42

2/29 ×X =42

2X= 42×29

2X=1218

X= 609

Hence, school's total population is 609

b) Decreasing the sample size

c) Increasing the standard deviation

a) Decreasing the confidence level will decrease the width of the confidence interval. A lower confidence level means we are less certain about capturing the true population mean, so we allow for a smaller margin of error, resulting in a narrower interval.

b) Decreasing the sample size will increase the width of the confidence interval. With a smaller sample size, there is less information available to estimate the population mean. This increased uncertainty leads to a wider confidence interval to accommodate a potentially larger margin of error.

c) Increasing the standard deviation will increase the width of the confidence interval. A larger standard deviation indicates more variability in the data. With greater variability, the estimated population mean could be further away from the true mean, requiring a wider interval to capture the potential range.

d) Decreasing the mean does not affect the width of the confidence interval. The width of the interval is primarily determined by factors such as confidence level, sample size, and standard deviation. The value of the population mean itself does not impact the width of the interval since it is the target value being estimated.

In summary, decreasing the confidence level and sample size, as well as increasing the standard deviation, will all increase the width of the confidence interval for a population mean, reflecting increased uncertainty and potential variability in the estimation. However, decreasing the mean does not directly impact the width of the interval.

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Answer:

She needs 153

Step-by-step explanation:

Let x be the score in the 4th game

To find the average add up the scores and divide by the number of scores added

(149+162+152+x) /4 = 154

Multiply each side by 4

(149+162+152+x) /4  *4= 154*4

(149+162+152+x)  = 616

Combine like terms

x+463=616

Subtract 463 from each side

x+463-463 = 616-465

x = 153

The probability that it will NOT snow on both Monday and Tuesday = 0.4

Let event A: there is snow on Monday

The chance of snow on monday is 20%

P(A) = 20%

P(A) = 0.2

And event B: there is snow on Tuesday

The chance of snow on monday is 30%

P(B) = 30%

P(B) = 0.3

Now, the probability that it will snow on both Monday and Tuesday:

P(A ∩ B) = P(A) × P(B)         ............(independent events)

P(A ∩ B) = 0.2 × 0.3

P(A ∩ B) = 0.6

So, the probability that it will NOT snow on both Monday and Tuesday:

P(A ∩ B)' = 1 - P(A ∩ B)

P(A ∩ B)' = 1 - 0.6

P(A ∩ B)' = 0.4

therefore, the required probability is: 0.4

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the complete question is:

There is a 20% chance that it will snow on Monday and a 40% chance on Tuesday. What is the probability that it will NOT snow on both Monday and Tuesday?

(L2) An inscribed circle is one that encompasses a polygon so that it passes by each of the polygon's vertices.

A circumcircle, not an inscribed circle, is a circle that encircles a polygon at each vertex. A circle that is enclosed within a polygon and intersects each side of the polygon exactly once is said to be inscribed. A circumcircle, on the other hand, is a circle that goes through every vertex of the polygon, with its center located at the point where the perpendicular bisectors of the polygon's sides converge. The greatest circle that can be drawn within a polygon is the circumcircle, while the largest circle that can be drawn inside a triangle is the inscribed circle.

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Answer:

Step-by-step explanation:

Graph A: Bacteria

The Equation: y=8(1+.06)^x

The Population in 10 years: 14.3

The Population in 12 years: 16.1

Graph B: Species

The Equation: y=8(1+.02)^x

The Population in 10 years: 9.75

The Population in 12 years: 10.15

Graph C: Chemical Compound

The Equation: y=8e^((ln.05/11)x)

The Population in 10 years: 4.3

The Population in 12 years: 3.7

For the given statement, we have to correctly rejecting the null hypothesis.

According to the statement

we have to find the outcome when hypothesis test evaluating a treatment that has a very large and robust effect.

For this purpose, we know that the

A hypothesis is a testable statement about the relationship between two or more variables or a proposed explanation for some observed phenomenon.

And according to the given statement it is clear that the by this we have to rejected this hypothesis.

because this treatment and the large effects are not possible for the independent values of the hypothesis.

In other words, we can say that the we have to correctly rejecting the null hypothesis.

So, For the given statement, we have to correctly rejecting the null hypothesis.

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