Answer:
x = 8
length is 12 meters
width is 9 meters
Step-by-step explanation:
P = 2l + 2w
where l is the length and w is the width.
(There are two sides with the same length, and two sides with the same width.)
Let l = x + 4 and w = 2x - 7
so 2(x+4) + 2(2x-7) = 42
Distribute the 2s
2x + 8 + 4x - 14 = 42
Combine like terms
2x + 4x + 8 - 14 = 42
Group
6x - 6 = 42
Add 6 to both sides
6x = 48
Divide 6 on both sides
x = 8
Plug back in
l = 8 + 4 = 12 meters
and w = 2(8) - 7 = 16 - 7 = 9 meters
Double-check: 2 * 12 + 2 * 9 = 24 + 18 = 42
Answer: 10:9
Step-by-step explanation:
brother 1- 1m 60cm
brother 2- 1m 44cm
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the ratio would be brother 1 : brother 2 => 1m 60cm : 1m 44cm
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convert both the values to cm
1m = 100cm
brother 1 would be 100cm + 60cm or 160cm
brother 2 would be 100cm + 44cm or 144cm
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when simplified
the ratio of brother 1 to brother 2 would be 10:9
Just take a calculator and divide 4 by 10 exactly how you see it. Or just divide it like you normally would any number on paper. 0.4 is your answer.
Set the smaller one to x. 2x+6=22, so 2x=16. Thus, x=8 and x+6=14, so 8 and 14 are our numbers.
