Answer:
x - 9
Step-by-step explanation:
First, distribute:
-3x - 9 + 4x
Then, simplify (add up x):
x - 9
And we're done ^^
Just think about what is happening. Multiplying an unknown and then adding 3. There are several ways to do this;
A number multiplied by 8 is added to 3.
3 plus a quantity multiplied by 8
The ones you have to be careful for are the ones where order matters. Don't forget PEDMAS your order of operations.
Answer:
x = 16
Step-by-step explanation:
GH = x + 8
FH = 4x - 25
JH = 32
KH = 52
Since ΔFGH ~ ΔKJH,
GH/JH = FH/KH
Thus:
(x + 8)/32 = (4x - 25)/52
Cross multiply
52(x + 8) = 32(4x - 25)
52x + 416 = 128x - 800
Collect like terms
52x - 128x = -416 - 800
-76x = -1,216
Divide both sides by -76
x = -1,216/-76
x = 16
Answer:
42
Step-by-step explanation:
It changes 42 cents each year
86% bc 50 is easy to work with, you know 43 arent red, and since 43x2=86 its 86, multiply by 2 bc 50 is half of 100