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pychu [463]
3 years ago
13

What is the solution to the system of equations below? y= -3/4 x + 3 and y = –12 (20, –12) (12, –12) (–6, –12) (–12, 12)

Mathematics
1 answer:
qaws [65]3 years ago
6 0

Answer:

the correct answer is (20,-12)

Step-by-step explanation:

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A manufacturing company plans to coat the entire exterior of a cylindrical shipping container with a 0.075-mm layer of special r
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534.07cm² * 0.35=186.9245 dollar

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2 years ago
865 divided into 2330 to the nearest percent
dmitriy555 [2]

Answer:

269%

Step-by-step explanation:

2330

---------- = 2.69  =>  269%.  (Mult. the number 2.69 by 100% to obtain this)

 865

7 0
3 years ago
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Analyze the data sets below. Which of the following statements are true? Select all that apply.
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C and D

Step-by-step explanation:

8 0
2 years ago
Franchise Business Review stated over 50% of all food franchises earn a profit of less than $50,000 a year. In a sample of 130 c
nydimaria [60]

Answer:

We need a sample size of 564.

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}.

For this problem, we have that:

\pi = \frac{81}{130} = 0.6231

The margin of error is:

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

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Based upon a 95% confidence interval with a desired margin of error of .04, determine a sample size for restaurants that earn less than $50,000 last year.

We need a sample size of n

n is found when M = 0.04

So

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

0.04 = 1.96\sqrt{\frac{0.6231*0.3769}{n}}

0.04\sqrt{n} = 1.96\sqrt{0.6231*0.3769}

\sqrt{n} = \frac{1.96\sqrt{0.6231*0.3769}}{0.04}

(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.6231*0.3769}}{0.04})^{2}

n = 563.8

Rounding up

We need a sample size of 564.

4 0
3 years ago
Hi! Please help :) (will give brainliest <3)
kvv77 [185]

Answer:

a.51

b.131.5

d.131.5

w.131.5

x.51

y.131,5

z.51

don't know the rest

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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