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Zinaida [17]
4 years ago
10

Please help??! Solve by elemination 4x + y = 612x + 3y = 18Show your work

Mathematics
1 answer:
RUDIKE [14]4 years ago
8 0
Multiply -3[4x+y=6].
This gets you -12x-3y=-18.
Add the two equations together to eliminate the y.
-12x - 3y = -18
+ 12x + 3y = 18
------------------------
0 = 0
This means that these are in fact the same line, therefore there are infinite solutions.
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The formula for the volume of a sphere is v=4/3r3 what is the formula solved for r?
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Answer:

(3 V/ 4 pi) ^(1/3) =  r

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

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Multiply each side by 3/4

3/4 V = 4/3*3/4 pi r^3

3/4 V = pi r^3

Divide each side by pi

3/4 V/ pi = pi/pi r^3

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Take the cube root of each side

(3 V/ 4 pi) ^(1/3) = ( r^3) ^1/3

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5 0
3 years ago
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3 years ago
Jackie wants to burn 2000 calories in one week she can burn 250 calories per hour doing aerobics. How many hours should Jackie d
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Answer:

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8 0
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Step-by-step explanation:

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The base length is then ...

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X - the number
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\frac{x}{8}+10 \geq 12
4 0
3 years ago
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