Equation 1: x + y = 40 ; therefore y = 40 - x
Equation 2: 25x + 15y = 900
Find x first:
25x + 15 (40 - x) = 900
25x + 600 - 15x = 900
10x = 900 - 600
x = 300÷10
x = 30 hours Chris needs to spend for tutoring job
y = 40 - 30
y = 10 hours Chris needs to spend for referencing job
Answer:
10
Step-by-step explanation:
(6x-5)+(12x+5)=180
18x=180
x=10
No it isn't because it wasn't an expression. An algebraic expression is a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide)
The answer is b I really. Don’t know don’t trust me
Answer:
Volume = length× width× height
v=lwh
v=8×6×7
v=48×7
v= 336inches
