Can u pls help I need a good grade

15

Step-by-step explanation:

Any triangle adds you to 180

Because it is a right triangle it will automatically  have 90°

Now you know 90° and 75°. You add it up and get 165°

Then you take the sum of all angles which is 180° and you do 180°-165°.

Your answer is 15°. it is an acute angle because it is below 90°

c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: