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rodikova [14]
3 years ago
14

Please can you work this out?

Mathematics
1 answer:
ikadub [295]3 years ago
6 0
16=8(x+9)
8(x+9)=16
18x+72=16
18x=-56
x=-28/9
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12x-5y=20 y=x+4<br> 3x+y=3 x=-y+3
Vladimir79 [104]
Standard form (which I assume is what they want you to turn these into) is y=mx+b.

12x-5y=20 is y=2.4x-4.
Subtract 12x from both sides, -5y=-12x+20.
Multiply both sides by -1, 5y=12x-20.
Divide both sides by 5, y=2.4x-4.

y=x+4 is already in standard form- I'm not quite sure what to do.

3x+y=3 is y=-3x+3.
Subtract 3x from both sides, y=-3x+3.

x=-y+3 is y=-x+3
Ad y to both sides, y+x=3.
Subtract x from both sides, y=-x+3.
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3 years ago
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The volume of a cone is 329.6 cubic inches, and the height is 5.4 inches. Which of the following is the closest to the radius r
Anna [14]

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329.6=1/3×16.97r

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r=58.23

8 0
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I need help please.
olya-2409 [2.1K]

Answer:

i think the anwser is 2

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Greatest factor for 16 20 &amp; 32
iogann1982 [59]

Answer:

4 is the greatest factor for 16 20 and 32

Step-by-step explanation:

because its the g<u>reatest number</u> that can be multiplied to get 16 20 and 32

4×4=16

4×5=20

4×8=32

there isn't any greater number than 4 that can get the answers for 16 20 and 32 by multiplication

7 0
3 years ago
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