Answer:

Step-by-step explanation:
Since the slope is -5 is either C or D. Let's replace
in either to see what we get.
C:
Nope.
D:
Good!
(53 + 23) + 7 = 53 + (23 + 7) =53 + 30 = 83
Answer: A. 53 + (23 + 7)
It's Associative Laws (a + b) + c = a + (b + c).
Answer:
Step-by-step explanation:
Like terms have same variable with same power.
r² + 5r + 3r² - 2r = r² + 3r² + 5r - 2r
= 4r² + 3r
We have 225 boxes. And each crate can handle 9 boxes.
Let x = the number of crates to be loader.
9x = 255
Divide both sides by 9
x = 25
Answer: 9.6 units
<u>Step-by-step explanation:</u>
The formula for the length of a diagonal (d) for a rectangular prism given length (L), width (w), and height (h) is: d² = L² + w² + h²
Given: L = 8, w = 2, h = 5
d² = 8² + 2² + 5²
d² = 64 + 4 + 25
d² = 93
√d² = √93
d = 9.6