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3 years ago

HELPPPP WITH THIS QUESTION PLEASEEE!!!

Mathematics

1 answer:

WINSTONCH [101]3 years ago

8 0

Answer:

I believe it is A.

Let me know if this helps!

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The sum of all but one interior angle of a heptagon is 776°. The final angle must have a measure of

shutvik [7]

A heptagon has 7 sides.

Sum of all interior angles = (7 - 2) x 180 = 900°

900 - 776 = 124°

Answer: The final angle must be 124°

5 0

3 years ago

Read 2 more answers

(0,4)<br> (3,-2)<br><br> The slope is m<br> and the y-intercept is b =

Rudiy27

Answer:

m = -2

y-intercept = 4

Step-by-step explanation:

m = y2-y1/x2-x1

m = -2-4/3-0

=-2

y=mx+b

Substitute the coordinates into the equation to find b

4=-2(0)+b

4=b

so y intercept is 4

y=-2x+4

5 0

3 years ago

Juan buys a pen for $1.75. what change he should receive if he gives the clerk $5.00?

Ksenya-84 [330]

Subtract 1.75 from 5.00
5.00-1.75= 3.25

6 0

3 years ago

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Researchers ask a random sample of 1,001 adults nationwide whether they favor or oppose the legalization of marijuana. Fifty-fiv

natima [27]

Answer:

b. It will decrease by a factor of 2

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

The lower end of the interval is given by:

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

The upper end of the interval is given by:

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

The length of the interval is the subtraction of the upper end by the lower end, so it is:

$L = 2z\sqrt{\frac{\pi(1-\pi)}{n}}$

This means that the length is inverse proportional to the square root of the size of the sample.

So, if the sample size is multiplied by 4, the length of the interval is going to decrease by a factor of 2.

4 0

3 years ago

A bag contains 14 red marbles and 6 blue marbles. two marbles are randomly drawn without replacement. find the probability that

Ksenya-84 [330]

We take 2 marbles from 20 marbles and the total ways is 20x19:2=190
But we need only 2 red marbles and the ways is 14x13:2=91
And finally we do the division 91:190=91/190 is the probability we need

7 0

4 years ago