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marta [7]
3 years ago
10

28 is 35% of what? My brain is literally dead and I can't even solve it.

Mathematics
2 answers:
Viktor [21]3 years ago
5 0
28 = (35/100)*x; where x represents "what"
2800 = 35*x;
x = 2800 ÷ 35;
x = 80;
Alekssandra [29.7K]3 years ago
4 0
We set up a proportion: 28/?= 35/100

Cross multiply: 35*?= 28*100
⇒ ?= 28*100/35= 80

28 is 35% of 80.
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Answer:

A(x) = x(200-x)

Step-by-step explanation:

400 feet of fencing to enclose a rectangular dog exercise pen means the perimeter of rectangle is 400 feet

If x is length and y is breadth. Perimeter is given by :

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y = 200-x

Area of a rectangle is given by :

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A(x) = x(200-x)

Hence, the area as a function of length of rectangle is x(200-x).

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h(t)=-4.9t^{2}+34.3t+1
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\\t= \frac{34.3}{9.8} =3.5
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\\h_{max}=h(3.5)=-4.9\times3.5^{2}+34.3\times3.5+1=61.025

The ball reaches its maximum height after 3.5 seconds, and the maximum height is 61.025 meters.
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Step-by-step explanation:

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