Answer:A
Step-by-step explanation:
The area of a triangle is 1/2 x base x height.
You are given the area and base.
You have: 72 = 1/2 x 18 x Height
multiply 18 by 1/2 to get 72 = 9 x height.
Height = 72 / 9
Height = 8 inches.
Answer:
d = 55 boxes of deluxe
s = 135 - 55 = 80 boxes of standard
Step-by-step explanation:
This is a system of equations.
Let s = number of standard boxes
d = number of deluxe boxes
s + d = 135 sold
7s + 13d = $1275
we can use substitution
s = 135 - d
7*(135 - d) + 13 d = 1275
945 - 7d + 13d = 1275
6d = 330
d = 55 boxes of deluxe
s = 135 - 55 = 80 boxes of standard
Answer:
C
Step-by-step explanation:
Adding we get:
-2x^2+3x^2 + 7x - 8x - 6 -1 = X^2 -x-7
Answer: 335, 478.57
Step-by-step explanation:
Let your paycheck be p and your coworker's be r
P=r-0.3r=0.7r
2p=670
P=670/2=335
Therefore 335=0.7r
r=478.57