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klasskru [66]
2 years ago
6

What should be the first step to solve 5x² – 10x = -5 by completing the square method? O Divide the equation by 5 O Multiply the

equation by 5 O Add 25 to both sides O Subtract 25 from both sides​

Mathematics
2 answers:
8_murik_8 [283]2 years ago
8 0

Answer:

Divide the equation by 5

so that the coefficient of x^2 is +1.

iogann1982 [59]2 years ago
7 0

Answer:

divide the equation by 5

Step-by-step explanation:

all the components are factors of 5 so if we divide by 5, then we get as x² - 2x = -1

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Julli [10]

Answer:

B. and C.

Step-by-step explanation:

1. Set the polynomial equal to zero:

x² + 5x + 7 = 0

2. Plug the given values of a, b, and c into the quadratic formula:

x=\frac{-5+-\sqrt{5^{2}-4(1)(7) } }{2(1)}

3. Solve the square root:

x=\frac{-5+-\sqrt{25-4(1)(7)} }{2(1)}

x=\frac{-5+-\sqrt{25-28} }{2(1)}

x=\frac{-5+-\sqrt{-3} }{2(1)}

4. Simplify the rest:

x=\frac{-5+-\sqrt{-3} }{2}

5. Separate the solutions:

x=\frac{-5+\sqrt{-3} }{2}  , x=\frac{-5-\sqrt{-3} }{2}

Thus, options B and C are the answers.

hope this helps!

4 0
2 years ago
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anyanavicka [17]
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2 years ago
W(n)=n-1; find w-(4)
loris [4]

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Step-by-step explanation:

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mel cuts a slice of cake if her slice is 4/15 of the cake, what is the central angle of her slice, please give answer in degrees
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Answer:

Below in bold.

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