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How do you solve the quadratic equation x2+2x-15=0

1 answer:

3 0

X = -5 and 3

You solve using the quadratic equation by using the formula below where the coefficients of each term are the letters in alphabetical order.

$\frac{-b +/- \sqrt{b^{2} -4ac} }{2a}$

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Use formula for theoretical probability:

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1. The probability that Jonas will get an orange is

$Pr(\text{Jonas gets orange})=\dfrac{5}{13}.$

2. Ben is taking a piece second and he has 12 piecies left, among them 5 apples, 4 oranges and 3 bananas. The probability that Ben will get an apple is

$Pr(\text{Ben gets apple})=\dfrac{5}{12}.$

3. Use the product rule to determine

$Pr(\text{Jonas gets orange and Ben gets apple})=\dfrac{5}{13}\cdot \dfrac{5}{12}=\dfrac{25}{156}.$

Answer: correct choice is A.

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If my current grade is a 65.50 percent and I get an 98 percent on a 60 point test what will be my new percentage

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