Answer:
-4
Step-by-step explanation:
-129 = 6(7 + 7x) - 3
Distribute the 6 into the parentheses.
-129 = 42 + 42x - 3
Add like terms.
-129 = 39 +42x
Subtract 39 from both sides.
-168 = 42x
Divide 42 from both sides.
-4 = x
Answer:
The answer is 8 of those cubes.
Answer:
-1
Step-by-step explanation:
First, we need to find which expression to use for f(1). The first function does not include 1, because it is <, and not 
The second functions includes 1, because it has a
, meaning greater than or equal to, so this is the function we must use.
-x^2
Plug 1 in for x
-(1^2)
Solve the exponent first
-(1)
-1
So, f(1)=-1
Step-by-step explanation:
Surface area of what shape or solid ?