there are three consecutive odd integers. Three times the largest is 7 times the smallest. WHat are the integers
1 answer:
Answer:
3, 5, 7
Step-by-step explanation:
We can assign the first number as x. Since all the numbers are odd the next number will be x+2, and the last will be x+4.
3*(x+4) = 7(x)
3x+12 = 7x
12 = 4x
x = 3
x+2 = 5
x+4 = 7
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18x + 20 + x = 10x -3
Combine like terms
19x + 20 = 10x -3
Subtract 20 to both sides because whatever you do on one side you have to do it on the other side:
19x = 10x -23
Subtract 10x
9x = -23
Divide 9 to isolate x:
x = -23/9
Simplify to get a mixed number:
x = -2 5/9
Answer:
1
Step-by-step explanation:
Answer:
x = 4
Step-by-step explanation:
Given:
Square both sides:
Subtract 5 from both sides:
Divide both sides by 11:
perimeter of a 10 square
is 10 x 4 = 40 inches
so insulation needs to be at least 40 inches wide
