Answer:
copper ?? the "slope" is 8.75
Step-by-step explanation:
As your testing H0:p=0.79, then you have a two-tailed test.
The p-value at two-tailed test is given by:

Then, you need to check into the standard normal cumulative table to find at which -z you do have a probability of 0.395. Thus:
As you can see in the picture at z=-0.26 you have a P(Z<=-z)=0.3974
And at z=-0.27 you have a P(Z<=-z)=0.3936.
The average of these values is:

Then, you have a probability of 0.395 at a z of:

Then -z=-0.27, thus z=0.27
The answer is D because the opposite sides are equal to each other, so you have 2 of each measurement. Also, midsegments divide each side of the bigger triangle in half. So 2 (1/2AC + 1/2AB)= the perimeter of the quadrilateral but the 2 in front will cancel out both halves, so we are left with AC+AB (OPTION D)
12by8=1.5 4by3=1.3 1.5by1.3=1.12