ewash04
28.07.2019 •
Mathematics
The perimeter of a rectangle is 90 cm. the length is 15cm more than four times the width. find the dimensions of the rectangle.
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Ответ:
P = 90
L = 4W + 15
90 = 2(4W + 15 + W)
90 = 2(5W + 15)
90 = 10W + 30
90 - 30 = 10W
60 = 10W
60/10 = W
6 = W <=== the width is 6 cm
L = 4W + 15
L = 4(6) + 15
L = 24 + 15
L = 39 <=== the length is 39 cm
Ответ:
6
WEDNESDAY + FRIDAY (# OF MILES)
The Miles Covered by Each Lap = 3x
The Miles on Top of That = 6
TUESDAY + SUNDAY (# OF MILES)
The Miles Covered by Each Lap = 5x
The Miles on Top of That = 2
Step-by-step explanation: