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3 years ago

PLS I NEED HELP WITH MATH HOMEWORK FIND THE VALUE OF THE VARIBLE

Mathematics

1 answer:

zzz [600]3 years ago

3 0

Answer:

n=46

Step-by-step explanation:

Since this is a right triangle, you are left with 90 degrees

2n-2=90

2n=92

n=46

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Find the x-intercept for 11x - 33y = 99

seropon [69]

It is 9. You have to add 33y, then divide by 11 and you get x = 3y + 9

7 0

3 years ago

How many ways can you flip a coin and roll a standard dice?

ozzi

Answer:

its probably 6×2=12 times

coin has 2 sides

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3 years ago

Sal is making bracelets for a fundraiser he uses 6 inches of yarn per bracelet how many bracelets can sal make with 5 feet of ya

natali 33 [55]

There are 12 inches in 1 foot, and each bracelet takes 6 inches
12 divided by 6 = 2
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3 0

3 years ago

Read 2 more answers

Mia has a rectangle shape brownie. She cuts the brownie into 3 equal pieces.Which sentence is true ?

MAXImum [283]

Answer:

The whole brownie is 3/3

Step-by-step explanation:

Hello!

This is a classic fractions exercise.

The whole brownie was cut in three equal pieces. Each piece represents 1/3 of the brownie.

If you add the three pieces together 1/3+1/3+1/3 you get the whole brownie again 3/3 = 1

-Options-

The whole brownie is 1/3.

The whole brownie is 3/3. 

The whole brownie is 2/3.

The whole brownie is 3/2.

I hope this helps!

4 0

3 years ago

When the sample size and the sample proportion remain the same, a 90 percent confidence interval for a population proportion p w

deff fn [24]

Answer:

A 90% confidence interval for p will be narrower than the 99% confidence interval.

Step-by-step explanation:

The formula to compute the (1 - α) % confidence interval for a population proportion is:

$CI=\hat p\pm z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Here $\hat p$ is the sample proportion.

The margin of error of the confidence interval is:

$MOE= z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

The MOE is dependent on:

Confidence level
Standard deviation
Sample size

The MOE is directly related to the confidence level and standard deviation.

So if any of the two increases then the MOE also increases, thus widening the confidence interval.

And the MOE is inversely related to the sample size.

So if the sample increases the MOE decreases and vice versa.

It is provided that the sample size and the sample proportion are not altered.

The critical value of z for 90% confidence level is:

$z_{\alpha/2}= z_{0.10/2}=z_{0.05}=1.645$

And the critical value of z for 99% confidence level is:

$z_{\alpha/2}= z_{0.05/2}=z_{0.05}=1.96$

So as the confidence level increases the critical value increases.

Thus, a 90% confidence interval for p will be narrower than the 99% confidence interval.

6 0

3 years ago