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Lorico [155]
3 years ago
6

To win a trivia game Nevin must score 90 points. Each correct answer is worth 134134points and each incorrect answer is worth −1

4−14points. If he gets 58 questions correct and 22 questions incorrect, does Nevin win? How many points does he score?
Mathematics
1 answer:
weeeeeb [17]3 years ago
5 0
Answer: 8,080

Explanation: Since each answer is worth 134 points and each incorrect answer is -14 what I would do is 58 times 134 which is 7,772 . Then 22 times -14 is -308 . 7,772 - -308 is 8,080
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Find the sum
lakkis [162]

Answer:

Numerator = 2(b^2+a^2)    or equivalently 2b^2+2a^2

Denominator = (b+a)^2*(b-a), or equivalently b^3+ab^2-a^2b0-a^3

Step-by-step explanation:

Let

S = 2b/(b+a)^2 + 2a/(b^2-a^2)   factor denominator

= 2b/(b+a)^2 + 2a/((b+a)(b-a))     factor denominators

= 1/(b+a) ( 2b/(b+a) + 2a/(b-a))    find common denominator

= 1/(b+a) ((2b*(b-a) + 2a*(b+a))/((b+a)(b-a))   expand

= 1/(b+a)(2b^2-2ab+2ab+2a^2)/((b+a)(b-a))  simplify & factor

= 2/(b+a)(b^2+a^2)/((b+a)(b-a))  simplify & rearrange

= 2(b^2+a^2)/((b+a)^2(b-a))

Numerator = 2(b^2+a^2)    or equivalently 2b^2+2a^2

Denominator = (b+a)^2*(b-a), or equivalently b^3+ab^2-a^2b0-a^3

4 0
3 years ago
How do you subtract 42 minutes from 1 hour 25 minutes? explain what to do and why to do it.
ikadub [295]

Answer:

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Step-by-step explanation:

you change the 1 hour into minute you and 60min to 25 minutes and then you subtract from 42 minutes to get the solution

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fenix001 [56]

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olga2289 [7]
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1/5*4/1 (add the one to make it a fraction)

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