Answer:
9h² + 51h + 28
Step-by-step explanation:
(5h + 4)(4h + 7)
=> 9h² + 35h + 16h + 28
=> 9h² + 51h + 28
Therefore, 9h² + 51h + 28 is the simplified expression.
Hoped this helped.
Answer:
1) <u>9450 = 21n</u>
2) 9450/21 = 21/21n
<u>450 = n</u>
3) you can <u>check the answer by multiplying 450 by 21</u>
Step-by-step explanation:
hope this helped
let me know if I am incorrect
Answer:
10
Step-by-step explanation:
Addition 2/9+7/9=1. 1+7+2=10
Answer:
a. 19x-13 b. 
Step-by-step explanation:
a. 3(-3+5x)-1(4-4x) = -9+15x-4+4x = 15x+4x-9-4 = 19x-13.
b. 
= 
Answer:
B
Step-by-step explanation:
We require 2 equations in 2 variables
let x be the number of salads sold and y the number of drinks sold, then the 2 equations are
x + y = 209 → (1)
6.5x + 2y = 836.5 → (2)
Multiplying (1) by - 2 and adding to (2) will eliminate y
- 2x - 2y = - 418 → (3)
Add (2) and (3) term by term
(6.5x - 2x) + (2y - 2y) = (836.5 - 418) ← simplify
4.5x = 418.5 ( divide both sides by 4.5 )
x = 93
The number of salads sold was 93
