Answer:
f-1(x) = (x - 16)/40
B
Step-by-step explanation:
Call f(x) = y
Interchange x and y
x = (5y + 2)*8 Remove the brackets
x = 40y + 16 Subtract 16 from both sides
x - 16 = 40y Interchange the left and right sides
40y = x - 16 Divide by 40
y = (x - 16)/40
f-1(x) = (x - 16)/40
Answer:
1.5
Step-by-step explanation:
18.90-10x=3.90
10x=15
x=1.5
The measure of angle B would equal 90 degrees. Hope this helps.
Answer:
No, 7, 8 and 9 do not form a right triangle.
Step-by-step explanation:
Assume that the shorter two side lengths are 7 and 8. Does 7^2 + 8^2 add up to 9^2? Does 49 + 64 add up to 81? NO.
No, 7, 8 and 9 do not form a right triangle.