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leva [86]
4 years ago
8

X^2+8x-20 use quadratic formula to solve for x

Mathematics
1 answer:
Sidana [21]4 years ago
8 0

Answer:

2 and -10

Step-by-step explanation:

formula = \frac{-8+0r-\sqrt{8^{2}-4(1)(-20) } }{2(1)}

--solve

\frac{-8+-\sqrt{64+80} }{2}

\frac{-8+or-\sqrt{144} }{2}

\frac{-8+or-12}{2}

divide by two

-4±6

-4+6=2

-4-6=-10

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I'm not too sure if this a a question for school but i think it really depends on what Sammy wanna wear. I would also say she may wear black pants and a striped shirt because of the amount she has of them. All the other clothes have only two pairs, So because she has more than two pairs for black pants and striped, it means that she likes that outfit of the black pants and striped shirt so she will most likely wear them.

8 0
4 years ago
Help please!!!!!!!!!!!
ss7ja [257]

First, solve 7 times square root of 5.

7 x 2.236 = 15.652

Now find the solution above that results in 15.65.

We can quickly eliminate the top 2 as they will result in very large numbers.

The bottom problem is quick to check - simplifies to (7 + 5)/5 = 2.4. No

It looks like the next to last answer is our best bet.

Figure the square root of 196 (14) and multiply by square root of 5 (2.236).  Giving us 31.304.

Divide the result by 2.  And that gives us 15.652.

If you knew the square root of 196 was 14, it was helpful to find this quickly because 14/2 = 7 and then the other square root was the 5 from the problem.


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3 years ago
What is the gcf of 187 and 578
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