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Mamont248 [21]
2 years ago
8

PLEASE IM BEGGING YOU HELPPPP does the equation go up to down? y=8x^2+7x-2

Mathematics
2 answers:
mart [117]2 years ago
5 0

Answer:

Opens upward

Step-by-step explanation:

Since the coefficient of x^{2} is a positive number +8, then it is a parabola that opens upward

coldgirl [10]2 years ago
4 0

Answer:

up, it's positive.

Step-by-step explanation:

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The difference of the product of 3 and 6 minus the quotient of 6 divided by 2​
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3 years ago
Your personal library contains books written by 165 authors. 60% of the authors are men. 40% of the authors write only nonfictio
Scorpion4ik [409]

Answer:

The probability that a book picked at random is either a work written by an author who writes only nonfiction or a work written by a man is 75.8%.

Step-by-step explanation:

The probability, in this case, has to be calculated using the sum rule because the events are independent. 

P = P(men) + P(non-fiction) - P(men non-fiction); where P is the probability. It means the probability that the random book was written by a man plus the probability that the random book was non-fiction minus the probability that the random book was written by a man who writes non-fiction. The probability that the random book was written by a man who writes non-fiction has to be subtracted, if not you will be duplicating it. 

Facts:

P(men) = 60% = 99/165

P(non-fiction) = 40% = 66/165

P(men non-fiction) = 40/165

P = P(men) + P(non-fiction) – P(men non-fiction)

P = 99/165 + 66/165 – 40/165

P = 125/165

P = 0.758 or 75.8%

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