Use pemdas
19--8=27-14=13
Therefore 13 is your answer. <span />
5h + 2(11-h) = -5
5h +2*11 +2*(-h) = -5
5h +22 -2h = -5
3h + 22 = -5
3h = -5 -22
3h = -27
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Therefore:
h=(-9), as 3 *(-9) = -27
Answer:
The breadth is about 6.32cm and the perimeter is about 50.56cm.
Step-by-step explanation:
The formula for the area of a rectangle is l * w = A, where l is the length, w is the width or breadth, and a is the area. If the length is 3 times the width, it can be written as 3w. This can be substituted into the formula along with the area to get 3w * w = 120, or 3w^2 = 120. Then it could be solved as an equation.
(3w^2)/3 = 120 / 3
w^2 = 40
w ~ 6.32
Then 6.32 can be multiplied by 3 to find the length, whch is 18.96. The formula for the perimeter of a rectangle is 2(l + w) = P.
2(6.32 + 18.96) = P
2(25.28) = P
50.56 = P
