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3 years ago

10

WILL GIVE BRAINLIST IF ANSWER RIGHT PICTURE UPLOAD ON IT

2 answers:

umka21 [38]3 years ago

7 0

Answer:Is it multiple options?

Step-by-step explanation:

Alisiya [41]3 years ago

6 0

It’s the second one I’m positive sorry if I’m wrong

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Work out the value of x

Korvikt [17]

Answer:

117 degrees

Step-by-step explanation:

So we already know that one angle is 38 degrees, so we have that one. The angle, 101 is exterior, and we have to subtract 180 from that to get the interior angle. We get a difference of 79. Since the sum of a triangle's interior angles are 180, we have to add 38+79 to get 117. Then, we have to subtract it from 180 to get the value of the interior angle as 63 degrees. Because x is on the outside, we have to again subtract 63 from 180 to get the missing value of x as 117.

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3 years ago

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Sydney reads 50 pages in 40 minutes how many pages does she read per minute

kirill115 [55]

1.25 pages per minute.

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3 years ago

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Suppose it is known that 8 out of the 20 teams in the sample had a season winning percentage better than 0.500.

Ganezh [65]

Answer:

The 95% confidence interval for the true proportion of all teams that had a season winning percentage better than 0.500 is (0.1853, 0.6147).

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 interval $1-\alpha$ , 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:

8 out of the 20 teams in the sample had a season winning percentage better than 0.500. This means that $n = 20, \pi = \frac{8}{20} = 0.4$ .

95% confidence interval

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

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 - 1.96\sqrt{\frac{0.6*0.4}{20}} = 0.1853$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 + 1.96\sqrt{\frac{0.6*0.4}{20}} = 0.6147$

The 95% confidence interval for the true proportion of all teams that had a season winning percentage better than 0.500 is (0.1853, 0.6147).

3 0

4 years ago

What is the rate of change of the function shown on the graph? Round to the nearest tenth.

faltersainse [42]

<u>Answer</u>:

The required is the multiplicative rate of change.

The correct answer is the second option<u> 2.5</u>

<u>Step-by-step explanation:</u>

The given function has the form of the exponential function

The general equation of the exponential function $y=c * r^x$

Wher c is constant and r is the multiplicative rate of change.

Using the given points to get the values of c and r

By using the point (0,2) ⇒∴ $2=c * r^0$ ⇒ c = 2

By using the point (1,5) ⇒∴ $5=2 * r^1$ ⇒ r = 5/2 = 2.5

Check the answer using the other points

If x = 2 ⇒⇒⇒ $y=2 * 2.5^2 = 12.5$

If x = -1 ⇒⇒⇒ y=2 * 2.5^(-1) = 0.8

<u>So, the multiplicative rate of change = 2.5</u>

4 0

3 years ago

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Please help! 20 points thanks :)

4vir4ik [10]

Answer:

Option A

Step-by-step explanation:

We use the slope formula:

$\frac{y_{2}-{y_{1}} }{x_{2} -x_{1} }$

We substitute the values given and see which option corresponds with our equation:

$\frac{-4-(-6)}{-2-3}$
Option A must be correct

5 0

3 years ago

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