Answer:
7:5 is the same as 21: 15
Step-by-step explanation:
21/7 = 3 and 3*5=15
i divided 21 by 7 to see how many times it was multiplied to get there, so i could do the same thing to the 5
I hope this helps :)
Answer: 75
Step-by-step explanation:
Multiple all those numbers together and then divide by 3
Answer:
53.85
Step-by-step explanation:
Answer:
$858
Step-by-step explanation:
You pay for 11 of the 12 months, so the average monthly payment is ...
(11/12)×$936 = $858
Here, I'll do the first one for you.
When they are talking about a number, use "x".
Since it says twice a number, you say 2x. Or 3x for three times the number
2x+12=3x-31
Then use algebra to find x. Get the numbers on one side and all the x's on the other.
2x+12+31=3x-31+31
2x+43-2x=3x-2x
x=43
Now do the rest on your own!
