Answer:
Option B. f¯¹(x) = ³√(– x – 9)
Step-by-step explanation:
From the question given above:
f(x) = – x³ – 9
f¯¹(x) =?
We can obtain the inverse f¯¹(x) of the above equation by doing the following:
f(x) = – x³ – 9
Replace f(x) with y
y = – x³ – 9
Interchange x and y
x = – y³ – 9
Make y the subject . This is illustrated below:
x = – y³ – 9
Rearrange
x + 9 = – y³
Multiply through by –1
–(x + 9) = y³
y³ = – x – 9
Take the cube root of both side
y = ³√(– x – 9)
Replace y with f¯¹(x)
f¯¹(x) = ³√(– x – 9)
Thus, the inverse of the function
f(x) = – x³ – 9
is
f¯¹(x) = ³√(– x – 9)
He needs to buy 4.5 packages of footballs because 4 is equal to 16 and half of four is 2 add them together you get 18
Answer:
the crate weighs 26.31
Step-by-step explanation:
add 32.8 and 39.34 together and then subtract 98.45 from the sum. ^^
Answer: A
We could solve it but it's easier to just check the given solutions.
A. (7,1)
2y + 5 = 2(1)+5 = 7 = x, good
x/3-y = 7/3 - 1 = 4/3, good
B. (-3,8)
2y + 5 = 2(8)+5 = 21 not x=-3, doesn't check
C. Can't be true because we found a solution
D. Infinitely many solutions not true because the lines have different slopes
The answer to (-8) + (-5) = -13
