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son4ous [18]
3 years ago
8

Find the value of x - if x^3-7x² - x = 0a) 17 (b) 71 c) 7d) 1​

Mathematics
1 answer:
S_A_V [24]3 years ago
6 0

Answer:

x = 0

Step-by-step explanation:

x^3-7x^2-x =0\\

Take out common factor

x(x^2-7x-1) = 0

The factor inside the parenthesis cannot be factored

Since there is a common factor that we pulled out of the original equation,

set that x equal to zero and solve

x = 0\\ : Therefore x = 0

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If y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8?
Licemer1 [7]

Answer:

Y=2/3

Step-by-step explanation:

Y varies directly as X

Y=k x

K is a constant

6=k72

K=1/12

Y=1/12x

Y=1/12×8

y=2/3

3 0
3 years ago
Can you please help?!
yan [13]
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5 0
3 years ago
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6z + 10 = -2 How should I solve it? It's from Simple Equations
worty [1.4K]

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Step-by-step explanation:

6z + 10 = -2

add 10 on both sides

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5 0
2 years ago
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Silva set up a dog-walking business. He earned $60 in June. He is projected to earn 110% more in July. How much is Silva project
snow_lady [41]

9514 1404 393

Answer:

  $126

Step-by-step explanation:

110% more than 100% is 210% of his June earnings:

  july = 2.10×$60 = $126

Silva is projected to make $126 in July.

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As always, you can think of % and /100 as being interchangeable.

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7 0
3 years ago
Solve each system of equations by substitution. 4y=3x+6 2y=x+8
SSSSS [86.1K]

Answer:

Step-by-step explanation:x=2y-8

4y=3.(2y-8)+6

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4y-6y=-24+6

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Y=9

X=2Y-8

x=2.9-8=10

5 0
2 years ago
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