To find the answer test all the possible solutions
6x+(5x+10)
= 6x+5x+10
=11x+10
A) 11x+10
B) (6x+10)+5x
= 6x+10+5x
=11x+10
C) 5(x+10)+5x
= 5x+50+5x
= 10x+50, this is not equivalent.
D) 6x+5(x+10)
= 6x+5x+50
= 11x+50, this is not equivalent either
Perimeter is the sum of all three sides so in this case x+(3x+2)+(3x+2).
They also gave us the perimeter which is 39 so
39= x+(3x+2)+(3x+2)
Simplify so 39=7x+4. [x+3x+3x=7x and 2+2=4]
Then get x by itself so subtract 4 from both sides.
35=7x
Then divide both sides by 7 to get x by itself.
Which leaves us with
X=5
Answer:
- v = 8
- x = -12
Step-by-step explanation:
1. I like to work with positive numbers, so the first thing I'd do is multiply the equation by -1.
2v + 7 = 23
2v = 16 . . . . . subtract 7
v = 8 . . . . . . . divide by 2
<em>Check</em>
-2(8) -7 = -23 . . . . true
___
2. (x/4) -5 = -8
x/4 = -3 . . . . . . . add 5
x = -12 . . . . . . . . multiply by 4
<em>Check</em>
(-12/4) -5 = -8 . . . . true
42
Step-by-step explanation:
you plug in -4 into x and multiply
ex: (-4)2-3(-4)+2