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Serggg [28]
3 years ago
8

What are the solutions to the equation?

Mathematics
2 answers:
solniwko [45]3 years ago
6 0
The equation is very easy to solve since there is a quadratic formula that we can apply in the problem.
With the given equation 5w2+10w=40, we can arrange the problem into 5w2+10w-40=0.
a=5, b=10, c=-40
By applying quadratic formula, the answers are 2 and -4. 
Virty [35]3 years ago
4 0

Solution:

5 w^2+10 w=40\\\\ 5(w^2+2 w)=8 \times 5 \\\\ w^2+2 w=8\\\\ w^2 + 2 w -8=0\\\\ w^2+ 4 w - 2 w -8=0\\\\ w \times(w +4)-2 \times(w+4)=0\\\\ (w-2)(w+4)=0\\\\ w-2=0 {\text{and}} w+4=0 \\\\ w=2 {\text{and}w=-4

So, the solution of the equation ,

 5 w^2+10 w=40

is , w=2 , -4.

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3 years ago
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Answer:

<u>A. p(hat) = .139</u>

We divide our sample population by the amount who tested positive. 14851/107109 = .139.

<u>B. 1.62 million</u>

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<u>C. No</u>

It depends upon the sample method. From what I can tell, I assume all conditions are met and it was not biased.

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We can also test if it's large enough. np and nq must be greater than 10. 107100 * .139 > 10, 107100 * .861 > 10.

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4 years ago
Simplify.<br><br> square root of 63.
lions [1.4K]

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