Answer:
about 21.43 i hope this helps!!! :)
Step-by-step explanation:
1.42857143 is equal to 1 and 3/7
multiply that by 15
21.4285714286
P = perimeter
Perimeter of a rectangle = l + l + w + w
or P = 2l + 2w
You know:
P = 150 m
l = w + 5 [length is 5 m greater than the width]
P = 2l + 2w Plug in what you know
150 = 2(w + 5) + 2w Simplify, distribute/multiply 2 into (w + 5)
150 = 2w + 10 + 2w
150 = 4w + 10 Subtract 10 to both sides of the equation
140 = 4w Divide 4 on both sides
35 = w
PROOF l = w + 5 ---> l = 40
P = 2l + 2w
150 = 2(40) + 2(35)
150 = 80 + 70
150 = 150
If you want the area of the entire trapeziod.
The formula for area of a trapeziod is:
1/2h(b₁+b₂)
So the equation applied to the trapeziod is:
2.5(20+12)
20+12 is 32. 32 multiplied by 2.5 is 80.
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Answer:
3x+26
Step-by-step explanation:
7(x+1)-4x+19
7x+7-4x+19
7x-4x+7+19
3x+7+19
3x+26
Answer:
210
Step-by-step explanation:
LCM of 42sec and 30 sec=210 sec
