Answer: 2x + 12 = 30
12 is the initial fee, then x is the unknown variable. Since each snack costs 2 dollars, and we don't know how many she had, we can use the equation:
2x + 12 = 30
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snack initial total
fee fee $ spent
A perfect square is a number that can be expressed as the product of two equal integers.
The only way to accurately calculate if a number is a perfect square is to find the factors. Before we go through the trouble of finding the factors, there is a quick trick you can use to help determine if you need even need to do the extra work.
Answer:
let length of Ribbon B l
Therefore
L=30
Ribbons cutted in ratio 5 is to 3
Therefore length of ribbonS
Be 30*5
=150
And 3*30=90
Therefore lengths of ribbons be 150 and 90
hope this helps :)
have a great day ahead!
No they do not. Just by looking at the numbers, you can tell they are clearly different. However, if you had 2 expressions, you can evaluate the expressions. But, since you are clearly able to tell the numbers are not the same thing, we do not need to do that for this problem.
3x-5=7
3x=7+5
3x=12
X=12/3
X=4
