Answer:
51
Step-by-step explanation:
(64/28) X 21 = x-3
48 = x - 3
+3 +3
51
Answer:9)B
10)C
Step-by-step explanation:
The guide can help you to learn how to do this yourself.
We use the Pythagorean theorem here, because we have the two sides and a right angle between them, so we calculate the hypotenuse like this:
x^2 = 6^2 + 8^2
x^2 = 36 + 64
x^2 = 100
x = square root of 100
x = 10
The correct answer is B.10.
f(x) = x² + 2
y = x² + 2
x = y² + 2
x - 2 = y²
√(x - 2) = y
√(x - 2) = f⁻¹(x)
The answer will equal 77
Cheers,Irys