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3 years ago

HURRY PLEASE BEST ANSWER GETS BRAINLIEST!

Mathematics

2 answers:

Tju [1.3M]3 years ago

6 0

Answer:

C

Step-by-step explanation:

nekit [7.7K]3 years ago

3 0

Answer:

The value of the second expression is 12, so the expressions are not equivalent.

Step-by-step explanation:

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Simplify PLEASE HELP

Dmitrij [34]

$\dfrac 34(5a-16) - \dfrac 13(6a-3)\\\\=\dfrac{15a}4 - \dfrac{48}4 - 2a + 1\\\\=\dfrac{15a}4 -12-2a+1\\\\=\dfrac{15a}4 -2a -11\\\\=\dfrac{15a-8a-44}{4}\\\\=\dfrac{7a-44}4$

4 0

2 years ago

Read 2 more answers

Clothing sizes are not standardized across brands. Suppose that a large study of women's size 14 jeans revealed that the mean hi

kenny6666 [7]

Using the z-distribution, we have that:

The mean hip measurement for the random sample of 15 pairs of women's size 16 jeans is of 44.1 inches.

The margin of error is of 0.8 in.

The interpretation is: Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.

The first step to solve this question, before building the confidence interval, is finding the sample mean, which is the sum of all observations divided by the number of observations. Hence:

$\overline{x} = \frac{44.5+43.0+46.6+42.9+43.7+43.9+42.4+43.2+43.1+44.4+46.1+44.7+44.4+43.9+44.7}{15} = 44.1$

The margin of error of a z-confidence interval is given by:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

z is the critical value.
$\sigma$ is the population standard deviation.
n is the sample size.

We have to find the critical value, which is z with a p-value of $\frac{1 + \alpha}{2}$ , in which $\alpha$ is the confidence level.

In this problem, $\alpha = 0.99$ , thus, z with a p-value of $\frac{1 + 0.99}{2} = 0.995$ , which means that it is z = 2.575.

Then, the margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 2.575\frac{1.2}{\sqrt{15}}$

$M = 0.8$

The margin of error is of 0.8 in.

The interval is:

$\overline{x} \pm M$

$\overline{x} - M = 44.1 - 0.8 = 43.3$

$\overline{x} + M = 44.1 + 0.8 = 44.9$

The interpretation is:

Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.

A similar problem is given at brainly.com/question/25300297

6 0

3 years ago

What is the main idea or topic of a story called?

VMariaS [17]

Answer:

the answer is B. Theme. Hope this helps

6 0

3 years ago

Read 2 more answers

A charity collected $40 for each mile Carlos ran in a race. If the charity received $400, which equation could you use to find o

mrs_skeptik [129]

Are there choices listed? If not, then we can take the information given and translate it to an equation as follows: 40m = 400. Solve for m by dividing both sides by 40 and find that Carlos ran 10 miles.

7 0

4 years ago

3. Find the horizontal change and the vertical change for the translation.

SashulF [63]

P(4, -4) ----> (-4, 7)
x- axis from 4 to -4 ; move to the left 8 units.
y-axis from -4 to 7 ; move up 11 units

D. left 8; up 11

C(3, -1) translated to the left 4 units and up 1 unit.
from 3 of x-axis move to the left 4 units to arrive at -1
from -1 of y-axis move up 1 unit is to arrive at 0.

(xy) → (x-4, y + 1) (-1,0) Choice D.

7 0

4 years ago