5(7 + 23) because you are multiplying 7 + 23 by 5. This is a numerical expression because it has numbers and opperations. This is not an algebraic expression because there are NO variables. Hope this helps :)
Answer:
9.2 feet. b.)
Step-by-step explanation:
This uses the Pythagorean Theorem
Do you notice that the ladder forms a right triangle with the building.
10 feet = hypotenuse length
4 feet = bottom leg length
x feet = height of building
so 10^2 = 4^2 + x^2
100 = 16 + x^2
84 = x^2
x = root(84) = 9.16515 feet about 9.2 feet
Answer:
The vertex form of the function is
.
Step-by-step explanation:
The given function is

The vertex form is

Rewrite the given function


Add and Subtract
.

Use 

Therefore the vertex form of the function is
.
I believe the answer is C