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Yuliya22 [10]
3 years ago
14

Please show your work how you solved this ! Please answer this !!

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
6 0

Answer:

-5xa^2-7a^3+7a^2+4

Step-by-step explanation:

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Factor the polynomial 2x^3+4x^2+8x
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So you want to take out the GCF first.
The GCF is 2x
2x(x^2+2x+4)
This is your final answer because there is not other way to factor.
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2 years ago
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Solve using elimination. -2x + y = 1 -6x - y = -9<br> HELP
laiz [17]

Answer:

(x,y) = (8,7)

Step-by-step explanation:

Solve equation [2] for the variable  x

 [2]    x = y + 15

Plug this in for variable  x  in equation [1]

[1]    (y +15) + y = 1

[1]    2y = -14

Solve equation [1] for the variable  y

[1]    2y = - 14

[1]    y = - 7  By now we know this much :

x = y+15

y = -7

// Use the  y  value to solve for  x

x = (-7)+15 = 8

Solution :

{x,y} = {8,-7}

5 0
3 years ago
7. A cylindrical tank can hold 2279.64 cubic feet of water. The radius of the tank is 11 feet. What is the height of the tank?
aliina [53]

Answer:

r = 8.12

Step-by-step explanation:

The volume for a cylinder is V=πr^2h therefore,

v = 2279.64

h = 11ft

r = ?

2279.64 = πr^2 * 11

\frac{2279.64}{11}= {\pi r^2} \\

207.24 = πr^2

\frac{207.24}{\pi} =r^2\\\\66 = r^2\\\\\sqrt{66} = r\\\\\\8.12 = r

3 0
2 years ago
PLS HURRY
SIZIF [17.4K]
Ummm I think 14 I am now sure tho..??
3 0
3 years ago
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