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SVEN [57.7K]
3 years ago
6

EXPERT HELP I'LL GIVE BRAINLIEST:

Mathematics
2 answers:
timurjin [86]3 years ago
7 0

Answer:

990, C

Step-by-step explanation:

The formula for the surface area of the bottom cushion is

A = 2wl + 2lh + 2hw (w is width, l is length, h is height)

w = 18, l = 21, h = 3

A = 2(18)(21) + 2(21)(3) + 2(3)(18)

A = 2(378) + 2(63) + 2(54)

A = 756 + 126 + 108

A = 990 (C)

makkiz [27]3 years ago
6 0
The answer is c. credits to the person above me. :]
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6 0
3 years ago
What is the justification for step 4 in the solution process?
iogann1982 [59]

Answer:

Multiplication property of equality

Step-by-step explanation:

Given

Step 4: b = -27/8

Required

Which property justifies it?

First, it should be noted that step 4 is a result of step 3

When step 3 is multiplied by 3/8 on both sides, we have step 4;

i.e.

\frac{8}{3b} = -9

\frac{8}{3b} * \frac{3}{8} = -9 * \frac{3}{8}

b = -9 * \frac{3}{8}

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<em>The property that allows 3/8 be multiplied on both sides is referred to as the multiplication property of equality</em>

3 0
3 years ago
Laura and Sean find the product of 2/3 x 4 using different methods.
choli [55]

Answer: So our equation is \frac{2}{3} *4

Laura does:

\frac{2}{3}*4 = 2*\frac{1}{3}  *4 = 2*\frac{4}{3}  = \frac{4}{3} + \frac{4}{3}  = \frac{8}{3}

while Sean does:

\frac{2}{3}*4 = \frac{2}{3} + \frac{2}{3} +\frac{2}{3}  + \frac{2}{3}  = \frac{8}{3}

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4 0
3 years ago
A candle manufacturer sells cylindrical candles in sets of three. Each candle in the set is a different size. The smallest candl
dem82 [27]

Answer:

A. 27 π cubic inches

Step-by-step explanation:

The volume of a cylinder is calculated using the formula;

Volume=\pi r^2h

From the given information, the smallest candle has a radius of 0.5 inches and a height of 3 inches.

We substitute r=0.5 and h=3 into the given formula.

The vlume of the smallest candle is

Volume=\pi \times0.5^2\times 3

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from the given information, the other two candles are scaled versions of the smallest, with scale factors of 2 and 3.

The volume of the other two candles will be 2^3\times \frac{3}{4}\pi=6\pi in^3 and 3^3\times \frac{3}{4}\pi=\frac{81}{4}\pi in^3

The wax needed to create one set of candle is

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The correct answer is A

8 0
4 years ago
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