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zheka24 [161]
3 years ago
11

Question

Mathematics
1 answer:
Lapatulllka [165]3 years ago
3 0

Answer:

y=-35x-2

Step-by-step explanation:

y=mx+c

m= slope

c= y intercept

therefore,

m=-35

c=-2

y=-35 x-2

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Jessica has 84.5 of fabric to make curtain
qaws [65]

Answer:

10.8\ yd

Step-by-step explanation:

<u><em>The complete question is</em></u>

Jessica has 84.5 yards of fabric to make curtains. She makes 6 identical curtains and has 19.7 of fabric remaining. How many yards of fabric does Jessica use per curtain?

Let

x-------> amount of yards of fabric that Jessica used per curtain

we know that

The length of 6 identical curtains plus the length of the fabric remaining, must be equal to the total yards of fabric'

so

The linear equation that represent this situation is

Solve for x

6x=84.5-19.7\\6x=64.8\\x=10.8\ yd

3 0
3 years ago
we believe that 42% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to
Maksim231197 [3]

Answer:

A sample of 1077 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

42% of freshmen do not visit their counselors regularly.

This means that \pi = 0.42

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.

How large of a sample size is required?

A sample size of n is required, and n is found when M = 0.035. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.035 = 2.327\sqrt{\frac{0.42*0.58}{n}}

0.035\sqrt{n} = 2.327\sqrt{0.42*0.58}

\sqrt{n} = \frac{2.327\sqrt{0.42*0.58}}{0.035}

(\sqrt{n})^2 = (\frac{2.327\sqrt{0.42*0.58}}{0.035})^2

n = 1076.8

Rounding up:

A sample of 1077 is required.

3 0
3 years ago
Which Baroque form was based on sacred texts?
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Mark me brainlyiest and the answer is b I know becuase I took the test
5 0
3 years ago
Read 2 more answers
Ayo i need help this is vv hard or i’m jus dumb.
erastovalidia [21]
It goes straight up I hope this helps if not in sorry
4 0
3 years ago
What happens to the food supply when food prices are high?
IgorC [24]
<span>B. The food supply diminishes in all socioeconmic classes. 
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