G They found that three-quarters of schools teaching grades 7-12 do not have computer science classes that teach coding. Their margin of error for estimating the proportion of schools that teach coding was 0.03. What does that margin of error represent

The margin of error represents that the sample proportion falls within 0.03 of the population proportion of schools teaching coding.

Step-by-step explanation:

We know that the margin of error gives a range of values of the sample proportion is within the population proportion .

Given : of schools teaching grades 7-12 do not have computer science classes that teach coding.

i.e. the sample proportion of schools teaching grades 7-12 do not have computer science classes that teach coding is 0.75.

If their margin of error for estimating the proportion of schools that teach coding was 0.03.

Then , it represents that the sample proportion falls within 0.03 of the population proportion of schools teaching coding.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.