3 years ago

What is seven minus eight over three?

2 answers:

7 0

If u want to know whats (7-8)/3 is you should just say 7-8 = -1 so the answer is -1/3 but if you mean like 7 - ( 8/3 ) so you should say (21-8) /3 = 13/3 :)))
i hope this be helpful
* marry Christmas *

Anna007 [38]3 years ago

5 0

Since 7= 21/3 and you are subtracting 8/3, you subtract 8 from 21. That gives you 13/3 or 4 1/3 depending on how you look at it.

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To apply the quadratic formula, the right side must be equal to 0.

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Now you can apply the quadratic formula $\frac{-b\±\sqrt{b^2-4ac}}{2a}$ to find the solution for w.

$\frac{-(-28)\±\sqrt{(-28)^2-4(2)(98)}}{2(2)} = \frac{28\±\sqrt{784-784}}{4} = \frac{28}4 = \boxed{7}$

(The quadratic formula is highly unnecessary in this problem, however. You could easily divide all values by 2 to get w²-14w+49=0, which factors into (w-7)²=0, for which 7 is the only solution which puts a factor of the quadratic equal to 0.)

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