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Alona [7]
3 years ago
8

If 3r=18, what is the value of 6r+18 ?

Mathematics
1 answer:
N76 [4]3 years ago
8 0
R=6, 6*6+18= 36+18=54
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The area of cross section of a prism is 45cm² and its height is,10cm. Find its volume​
mrs_skeptik [129]

Answer:

The Volume of triangular prism

                     V = 450 cm³

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given The area of cross section of a prism A = 45cm²

and     height (h) = 10 cm

The Volume of triangular prism

                V = ( Base area X Height )

                    =  45 X 10

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The Volume of triangular prism

                     V = 450 cm³

6 0
3 years ago
HELP PLEASEEE with steps
zysi [14]
<h3>Answer: Choice C) 421.9</h3>

=======================================

Explanation:

You're on the right track. You wrote down the proper expression to get the final answer, assuming you meant to write 75/4 as the third term inside the parenthesis. This works because each time you cut the side length in half to get each smaller triangle's side. The 3 is because there are 3 sides for each of the triangles. Much of this I have a feeling you already know as you wrote down the expression on the page, though I'm not 100% sure of your mindset. Computing this expression leads to 421.875 which rounds to 421.9

note: an alternative is to write 3*75 + 3*75/2 + 3*75/4 + 3*75/8, though that is more work. It's better to have that 3 factored out.

8 0
3 years ago
Factor 1/4 out of 1/4x -13/4
sweet-ann [11.9K]
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Answer:

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Explanation:

2((4)2) = 16 (This is how many he will need to get)

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4 0
3 years ago
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