ANSWER

EXPLANATION
Let the top of the hopper be

Then, by the cosine rule,

We evaluate to get,



Take positive square root of both sides to get,

The measure of angle B. is 90 degrees
Answer:
Step-by-step explanation:
∠2= ∠4 { alternate interior angles}
∠2= 65
∠1 + ∠2 = 180 {linear pair}
∠1 + 65 = 180
∠1 = 180- 65
∠1 = 115
Answer:
H(3,-1)
Step-by-step explanation:
To find midpoint you have to get first coordinates of both points and divide it by 2. So (-3+9)/2 = 3 and (-4+2)/2 = - 1
It either means its constant or the product of a constant