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3 years ago

13

HELP ME ASAP PLEASE!!

1 answer:

lilavasa [31]3 years ago

4 0

Answer:

a=45 b=65

Step-by-step explanation:

You know that all the angle measures of a triangle add to 180. So the equation would be angle a + angle b + 70 = 180. Subsitute and simplify and you get 16x -2 + 70 = 180. Subtract 70 from 180 to get 16x -2=110 add 2 to get 16x =110. Divide each side by 16 to gte x=7. Subsitute x = 7 into the equations for angle a and angle b to get the answers above

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Use the given level of confidence and sample data to construct a confidence interval for the population proportion p.

Molodets [167]

Answer:

The 95% confidence interval for the population proportion is (0.778, 0.884).

Step-by-step explanation:

We have to calculate a 95% confidence interval for the proportion.

The sample proportion is p=0.831.

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.831*0.169}{195}}\\\\\\ \sigma_p=\sqrt{0.00072}=0.027$

The critical z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

$MOE=z\cdot \sigma_p=1.96 \cdot 0.027=0.053$

Then, the lower and upper bounds of the confidence interval are:

$LL=p-z \cdot \sisgma_p = 0.831-0.053=0.778\\\\UL=p+z \cdot \sisgma_p = 0.831+0.053=0.884$

The 95% confidence interval for the population proportion is (0.778, 0.884).

8 0

4 years ago

A wall in front of a house is shown below. If 3/5 of the wall is made from brick, how do you determine the height of the brick p

garik1379 [7]

15 1/5×7 3/5= 120.9 because you would haft to change it to a decimal then times them

5 0

3 years ago

Please help. I WILL GIVE BRAINLIEST!

Bezzdna [24]

Answer:

I think the answer is sales tax

Step-by-step explanation:

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3 years ago

Which set of three angles could represent the interior angles of a triangle?

matrenka [14]

Answer:

See below

Step-by-step explanation:

The three numbers in the set have to sum to 180 degrees

If the first choice is 19 70 91 that would be it

8 0

2 years ago

Please help!<br><br>A: 128°<br>B: 92°<br>C: 36°<br>D: 52°

insens350 [35]

sum of triangle angles = 180

so

? = 180 - 36 - 92 = 52° => D

7 0

3 years ago