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Yuki888 [10]
3 years ago
10

8y9 z4 + 40y5 z4 - 8y4 z4

Mathematics
1 answer:
blondinia [14]3 years ago
6 0

Answer:

55

Step-by-step explanation:

rr

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8 0
3 years ago
What does 3 times 1/3 also what does 12 times 1/3 also what is 9 times 1/9
vladimir2022 [97]
When you set up 3 * (1/3), you're both multiplying and dividing by a 3. these two cancel out, and you're left with one. 3 *(1/3) is simply 1.

12 * (1/3), when you set it up, doesn't cancel out the same. multiply straight across the top (12 * 1), then divide by the bottom (3). 12/3 = 4, so 12*(1/3) is 4.

9 * (1/9) gives you the same result as the first one. the multiplied 9 and the divided 9 cancel out, and you're left with 1.
4 0
3 years ago
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How tall is the goal post if its shadow is 18ft. The height of the flagpole is 20 ft and its shadow is 8 ft.?
tamaranim1 [39]

You can set up an inequality to solve this. You can either do big to small --> \frac{x}{18} = \frac{20}{8} or small to big --> \frac{x}{18} = \frac{8}{20}. I'm going to be using big to small because I think it's a little easier.

\frac{20}{8} = \frac{x}{18}

Cross multiply and you will get:

360 = 8x

Isolate x:

x = \frac{360}{8}

x = \frac{90}{2}

x = 45

The goal post is 45 feet tall. Hope this helped. Good luck. : )

6 0
4 years ago
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aleksandr82 [10.1K]

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Step-by-step explanation:

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