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3 years ago

NEED HELP ! PLEASE HELP ASAP !

Mathematics

1 answer:

hichkok12 [17]3 years ago

8 0

Answer:

distance between points is 5.6568...

when you round it will be 5.7

answer is 5.7

Step-by-step explanation:

find the distance between two points using distance formula

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A parent volunteer group is raising money by making custom hats to sell at school activities they plan to sell the hats for $11

weeeeeb [17]

Answer:

(11 - 5)n - 50

Step-by-step explanation:

Cost of 1 hat = $5
Selling price = $11
Advertising = $50

Let the number of hats be n. Then money made is

<u>Profit for each hat:</u>

(11-5)

<u>Profit for n hats </u>

(11 - 5)n

<u>Deduct cost of advertisement - 50</u>

(11 - 5)n - 50

Option C is correct

6 0

3 years ago

What is the value of √64 × ∛27?

anastassius [24]

Answer:

Step-by-step explanation:

√64 ×∛27

√64=√8²=8

∛27 = √3³=3

8*3=24

4 0

3 years ago

Express the following ratio: 18 inches to 2 feet in its simplest form. Hint: 1 feet = 12 inches

Effectus [21]

Answer:

3:4

Step-by-step explanation:

18inches : 2feet

18 inches: 2x12 =24 inches

18:24 - 3:4(divide by 6)

8 0

2 years ago

4) Determine the value of r so that a line through<br> the points (r, 2) and (4, -6) has a slope =

OLga [1]

This exercise is incomplete. A slope of what?

8 0

3 years ago

HELP ASAP, PLEASE!!!!

GalinKa [24]

Using the t-distribution, as we have the standard deviation for the sample, we have that the test statistic is given by:

$t = \frac{-20 - 0}{\sqrt{\frac{32.66}{7}}}$

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is no difference, that is:

$H_0: \mu = 0$

At the alternative hypothesis, it is tested if there is a difference, that is:

$H_1: \mu \neq 0$

<h3>What is the test statistic?</h3>

The test statistic is given by:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.

$\mu$ is the value tested at the null hypothesis.

s is the standard deviation of the sample.

n is the sample size.

In this problem, $\mu = 0$ is tested at the null hypothesis, and the sample is: 20, -40, -40, 0, 20, - 60, -40, hence:

$\overline{x} = -20, s = \sqrt{32.66}, n = 7$ .

Hence, the test statistic is:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{-20 - 0}{\frac{\sqrt{32.66}}{\sqrt{7}}}$

$t = \frac{-20 - 0}{\sqrt{\frac{32.66}{7}}}$

More can be learned about the t-distribution at brainly.com/question/16313918

5 0

2 years ago