Write a system of equations:
x + y = 125
20x + 15y = 2100
Solving:
x = 125 - y
20(125 - y) + 15y = 2100
2500 - 20y + 15y = 2100
2500 - 5y = 2100
-5y = 2100 - 2500
-5y = -400
y=80
x + 80 = 125
x = 125 - 80
x = 45
The first charges 45$ per hour and the second charges 80$ per hour
Answer:
-8 a
Step-by-step explanation:
i simplified -3 a (70+3a) wich came out to negative eight A
Answer:
surface area =208 cm²
Step-by-step explanation:
length = l, breadth=b, height= h
Surface area of a rectangular solid = 2( lb+bh+hl)
= 2(4*6+6*8+8*4)
=2(24+48+32)= 2(104)= 208 cm²
Answer:
its A
Step-by-step explanation:
trust me man