Answer:
it's c
Step-by-step explanation:
-2x - 13 = -3x - 5
Step 1: Combine like terms
x's go with x's (-2x and -3x). To do this add 2x to both sides
(-2x + 2x) - 13 = (-3x + 2x) - 5
(0) - 13 = (-x) - 5
- 13 = -x - 5
normal numbers go with normal numbers ( -13 and -5). To do this add 5 to both sides
(- 13 + 5) = -x + (- 5 + 5)
-8 = -x + (0)
-8 = -x
Step 2: Isolate x by dividing -1 to both sides (this will take the negative sign away from the x)
![\frac{-8}{-1} =\frac{-x}{-1}](https://tex.z-dn.net/?f=%5Cfrac%7B-8%7D%7B-1%7D%20%3D%5Cfrac%7B-x%7D%7B-1%7D)
8 = x
x= 8
Hope this helped!
Answer: x = ± 1.68
Step-by-step explanation:
7x^4 = 56
x^4 = 56/7
x^4 = 8
Let a = x²
(x²)² = 8
(a)² = 8
a = ± √8
Now,
a = -√8
x² = -√8 has no real solution.
Taking +√8
a = √8
x² = √8
x = ± √(√8))
x = ± 1.68
Answer: $82,000
Step-by-step explanation:
4000 multiplied by 9 equals $36000. Add 36000 to 46000 and you get $82000.