Answer:
6, 8 and 10
Step-by-step explanation:
2x+3(x+4)=42
5x+12=42
5x=30
x=6
The numbers are 6, 8 and 10.
Answer:
x-30
Step-by-step explanation:
Firstly, you do the first step, which is, 3x-18+4x+12-6x, then you continue simplifying it: 7x-18+12-6x.
Keep it on and on, the next step: x-18+12, add 18 and 12 together you get 30.
So the final answer is x-30
Answer:
A C D
Step-by-step explanation:
The reason for this is because rational numbers are fractions and decimals.
B is an irrational like pi and other repeating decimals
To calculate this, we have to divide 2 1/2 by 8.
first, i wil turn 2 1/2 into fraction:
it's

and if we divide this by 8, we multiply the denominator by 8:

and this is the answer!