Answer:
It's D
Step-by-step explanation:
A = (1/2)(x)(y)
Let x = diagonal 1
Let y = diagonal 2
The product of xy = 144.
This means that x = 12 and y = 12.
So, 12 • 12 = 144
Each diagonal is 12 feet.
Prove:
72 feet = (1/2)(12)(12) feet
72 feet = (1/2)(144) feet
72 feet = 72 feet
Answer:
-3.3...
Step-by-step explanation:
3.2p-2.5+2.1p=5p-7/2
3.2p+2.1p-5p=-7/2+2.5
5.3p-5p=-7/2+2.5
0.3p=-1
p=-1/0.3
p=-3.3
We call x the 4 points-worth problems and y the 3 points-worth problems
You know that x+y = 32
4x+3y = 111
You know that the difference from the x and y is 32 so write:
x = 32-y
Substitute at x the value of 32-y
4(32-y)+3y = 111
128-4y +3y = 111
-4y+3y = 111-128
-y = -17
y = 17
Answer:
5
Step-by-step explanation:
Substitute:
(3(3)+8)-(2(3)+7)
Simplify:
(9+8)-(6+7)
17-13
5
