Let the unknown number be x
13x+72= -23x
13x+23x= -72
36x= -72
x= -2
The answer would be i<span>n step 4, he made an error in determining which value is closer to 82.5</span>
Answer:
Step-by-step explanation:
I take it that this is some sort of ratio. Start by solving the brackets on the left.
Brackets: 1/3 - 1/10
Brackets: 10/30 - 3/30
Brackets: 7/30
Brackets^2: 49/900
Brackets^2 - 1/5: 49/900 - 180/900
Brackets^2 - 1/5: -131/900
(2/5)^2 = 4/25
The way this read, it should be

Which when you invert and multiply becomes

which finally becomes

Answer:
1. t=240
2.t/3=(t/4)+20
Step-by-step explanation:
Answer:
a,b,d,e
answered in the first question