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3 years ago

PLSSS help me with this problem

Mathematics

1 answer:

-BARSIC- [3]3 years ago

7 0

Answer:

it is 1/4

Step-by-step explanation:

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1st question: Which TWO ratios below are equal? A) 3 to 8, C) 4 to 6, B) 6 to 9, D) 8 to 12 . Answer:___?

sineoko [7]

Answer:

Option B and C are equal ratios

15 pack of 8 pencils gives you more pencils

Step-by-step explanation:

8 0

3 years ago

The clerk at the grocery store makes $12 an hour. How much will be made in 40 hours?

professor190 [17]

Answer:480$

Step-by-step explanation:

Hope this helps

6 0

3 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

Fihd the area of the triangle. 6 8 square units

damaskus [11]

Answer:

area of triangle is

$\frac{1}{2} * b*h\\\\\frac{1}{2} *6*8\\\\6*4=24$

7 0

3 years ago

Julie and Tim are both cable subscribers. Julie pays 70$ per month plus an additional $4.25 for each movie she orders. Tim’s pay

Nikolay [14]

Answer:

Julie's bill came to $121 for the month in which she ordered 12 movies.

Step-by-step explanation:

Let x represent the number of movies ordered.

Julie: $70 + ($4.25/movie)x, and ...

Tim: $49.50 + ($5.50/movie)x

If Julie ordered 12 movies last month, then her bill came to

$70 + ($4.25/movie)(12 movies) = $70 + $51 = $121

Please be clearer about what you want here. Are you refering to Julie or to Tim or to both when you write, "an equation that best represents the amount of movies?"

7 0

4 years ago