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adell [148]
3 years ago
5

Question 1 options:

Mathematics
1 answer:
Whitepunk [10]3 years ago
6 0

Answer:

\frac{-1+/-3\sqrt{2} }{2}  where a = 1, b = 1,and c=-4

Step-by-step explanation:

To solve, use the quadratic formula. Using the quadratic formula, requires the standard form ax^2+bx+c Here a = 1, b = 1, and c = -4.

The quadratic formula is x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}.

Substitute and you'll have:

x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} =\frac{-1+/-\sqrt{1^2-4(1)(-4)} }{2(1)}=\frac{-1+/-\sqrt{1+17} }{2)}

\frac{-1+/-\sqrt{18} }{2}=\frac{-1+/-3\sqrt{2} }{2}

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8 0
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natima [27]

Answer:

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Step-by-step explanation:

Let first mechanic worked for X hours and second mechanic worked for Y hours .

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Thus, total money charged by them will be 95X + 115Y .

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Putting equation 1 in equation 2 we get ,

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5 0
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Answer:

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Step-by-step explanation:

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