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ValentinkaMS [17]
3 years ago
9

What is y-intercept for the line y=8x+21

Mathematics
1 answer:
Anna71 [15]3 years ago
7 0

Change Y to 0.

y=8x+21

0=8x+21

-8x=21

x=\frac{21}{-8\\}

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The area of a rectangle is 77ft and the length of the rectangle is 3ft more than double the width. Find the dimensions of the re
Radda [10]
Let b= length and a=width
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Replace b into Area formula:
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77=2a^2+3a now order and equal to zero:
2a^2+3a=77 now solve this with quadratic formula and you will get so values for a: -7ft and 5.5ft as you know the dimensions could not be negative so the correct answer for "a" side is 5.5ft, for getting the b side you haeve to replace a=5.5 into b=2a+3 and you will get b=2*5.5+3= 14ft.
Finished.

3 0
3 years ago
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Answer:

90 cubes.

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3 0
2 years ago
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OleMash [197]

Answer:

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5 0
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Read 2 more answers
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siniylev [52]
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Hope this helped :)
3 0
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Simplify the expression 3(× -6) + (4× + 12) -6×
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Answer:

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5 0
3 years ago
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