The length of a rectangle is 4 meters longer than the width. if the area is 21 square meters, find the rectangle's dimensions. round to the nearest tenth of a meter.
1 answer:
The length of a rectangle is 4 meters longer than the width. if the area is 21 square meters, find the rectangle's dimensions. round to the nearest tenth of a meter.
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Answer:
lenght = 2x + 3
breadth = x - 1
perimeter = 40
Now,
perimeter = 2(l+b)
40= 2( 2x + 3 + x - 1)
40= 2(3x - 2)
40 = 6x- 4
40+4 =6x
44/6 =x
x = 7.33
Answer:19
Step-by-step explanation:
90 - 23 = 67, 67 = 4x - 9, 76 = 4x, 76 / 4 = 19
A. 80
You estimate the product by rounding to the nearest 10:
1 x 90
2 x 35
3 x 30
5 x 18
6 x 15
9 x 10
