Answer:
x = 24.8
Step-by-step explanation:
2x + 12.8 + 117.6 = 180
Then solve.
2x + 130.4 = 180
2x = 4.6
x = 24.8
Answer:
x² - 16xy + 64y²
Step-by-step explanation:
The difference of x and 8y is x - 8y
The square of the difference is (x - 8y)² = (x - 8y)(x - 8y)
Expand by multiplying each term in the second factor by each term in the first factor, that is
x(x - 8y) - 8y(x - 8y) ← distribute both parenthesis
= x² - 8xy - 8xy + 64y² ← collect like terms
= x² - 16xy + 64y²
Answer:
when distributing the first equation 1/4(8y+24) it is actually 2y+6 because 1/4*24= 6 not 8
Step-by-step explanation:
9514 1404 393
Answer:
D. f^-1(x) = 3 -7x
Step-by-step explanation:
Solve x = f(y) for y to find the inverse function.
x = f(y)
x = (3 -y)/7 . . . . . . use the function definition
7x = 3 -y . . . . . . . .multiply by 7
y = 3 -7x . . . . . . . add y-7x to both sides
Then the inverse function is ...
2 * 4 then add 2, it would be 2*4 = 8 + 2 = 10
==> 10/4 simplify you get 5/2
