3 years ago

What number is d in 5d-7= -13?

1 answer:

3 0

5d - 7 = -13
5d = -13 + 7
5d = -6
d = -6/5

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Advocard [28]

(-1.15)x3.2=

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Alright so I got -3.68 by multiplying -1.15x3.2. We get a negative number since the first number is negative.

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2 years ago

nexus9112 [7]

Answer:

$P=\dfrac{\pi r^2+2800}{r} $ ft$

Step-by-step explanation:

Let the length of the rectangular part =l

The width will be equal to the diameter of the semicircles.

Area of the Skating Rink= $2(\frac{\pi r^2}{2})+(lX2r)$

Therefore:

$\pi r^2+2lr=2800\\2lr=2800-\pi r^2\\$Divide both sides by 2r\\l=\dfrac{2800-\pi r^2}{2r}$

Perimeter of the Shape =Perimeter of two Semicircles + 2l

$=2\pi r+2\left(\dfrac{2800-\pi r^2}{2r}\right)\\=2\pi r+\dfrac{2800-\pi r^2}{r}\\=\dfrac{2\pi r^2+2800-\pi r^2}{r}\\=\dfrac{\pi r^2+2800}{r}$

The perimeter of the rink is given as:

$P=\dfrac{\pi r^2+2800}{r} $ ft$

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3 years ago

IRISSAK [1]

Yes. All even numbers are divisible by 2. Every single one of them

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3 years ago

sashaice [31]

$27.00x.15=4.05
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Each person will pay $10.35

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2 years ago

uranmaximum [27]

C it is yo -/-/-/-/-/—-/-/

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2 years ago