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3 years ago

The slope of the line below is -5. Which of the following is the point slope form of the line (2,-7)

Mathematics

1 answer:

Dominik [7]3 years ago

7 0

Equation of the line in point slope form is y + 7 = -5(x - 2)

Step-by-step explanation:

Step 1: Given slope of the line is -5 and passes through the point (x1, y1) = (2,-7). Equation in point slope form is y - y1 = m(x - x1)

⇒ y - (-7) = -5(x - 2)

⇒ y + 7 = -5(x - 2)

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The number of fans who attended a softball game increased from 1200 for the first game to 1300 for the second game. How many fan

kondaur [170]

1400 fans because it is increasing by 100 for each game

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3 years ago

I want to take a survey of students at my university to find out what proportion like the new bus service on campus. I believe t

tatiyna

Answer:

You will need to sample at least 3108 students.

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 $1 - \frac{\alpha}{2}$ .

In this problem, we have that:

$\pi = 0.75$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The margin of error is:

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

How many students will I need to survey if I want to estimate, with 99% confidence, the true proportion to within 2%?

You need a sample size of at least n.

n is found when M = 0.02. So

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

$0.02 = 2.575\sqrt{\frac{0.75*0.25}{n}}$

$0.02\sqrt{n} = 1.115$

$\sqrt{n} = \frac{1.115}{0.02}$

$\sqrt{n} = 55.75$

$\sqrt{n}^{2} = (55.75)^{2}$

$n = 3108$

You will need to sample at least 3108 students.

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3 years ago

X to the second power equals 169 what is x to the second power equals 169 what is x

Goshia [24]

Answer:

Step-by-step explanation:

X^2= 169

The square root of 169 in the calculator is 13.

To check multiply 13*13= 169. Or u can do 13^2.

So, x=13.

Hopes this helps

- Amelia

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3 years ago

If a student is on the basketball team, then he has practice after school. If there is practice after school, then the student n

Makovka662 [10]

Answer:

B. Jamal needs to find a ride home other than the bus.

Step-by-step explanation:

This conclusion can be made from the prompt.

Hope this helps!

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3 years ago

What is the greatest one between 95% , 9/10, 0.89

Zarrin [17]

Answer:

95%

Step-by-step explanation:

9/10 is the same as 90%; which is less than 95%

0.89 is the same as 89%; which is less than both 90% and 95%

Hope this helps! Please mark brainliest! Have a great day!

Thank you for using Brainly!

8 0

3 years ago

Read 2 more answers