Which graph shows the line y = -3x + 1

Mathematics

2 answers:

Nikolay [14]2 years ago

7 0

Line B

Explanation:

The slope is negative so the line is going to the left. The y-intersect is 1.

balandron [24]2 years ago

6 0

The answer to the question is B

You might be interested in

I need help with question 21. I am stuck on that question.

olga_2 [115]

Answer:25%

believe

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

I need help answering

klio [65]

The equation is 20(3) + 25(4) - 10 = $150, the 3 was given for lawns and the 4 was given for Gardens. Plug and Chug

7 0

3 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 $M = 0.04$