My teacher is making us do this but we haven’t learned it test someone

Hello from MrBillDoesMath!

35 degrees

Discussion:

The angle shown is a right angle. That is, it contains 90 degrees. So we need to solve

90 = 7x + 11x               => as 7x + 11x = 18x

90 = 18x                      => divide both sides by 18

x= 90/18 = 5

The measure of the smaller angle is 7x = 7(5) = 35

Thank you,

MrB

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!