What are the coordinates of the midpoint of ab where a(−7, 2) and b(5, −9)?

(−2.5, −1)

(−6, −5.5)

(−1, −3.5)

(1, −9)

Step-by-step explanation:

Let

M-------> the midpoint of AB

Step 1

Find the x-coordinate of the midpoint AB

we have

substitute

Step 2

Find the y-coordinate of the midpoint AB

we have

substitute

therefore

the coordinates of the point M are

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet