X² + 5x - 14 = 0
(x-2)(x+7) = 0
x - 2 = 0
x + 7 = 0
x = 2
x = -7
Your answer is B.
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Next question.
2x² - 4x - 6 = 0
a = 2
b = -4
c = -6
And is D.
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Next question
If the discriminant is positive, then there will be 2 solutions.
Your answer is C.
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Next question
Plugging in the equation into the quadratic formula should get you answer choice A.
Answer:
So, for the ascending order, there are only 9 digits to choose from, and hence, there are 9C5 ways to choose the 5 digits. So, there can be 9C5=126 5-digit no.s with their digits in an ascending order.
126 5
Answer:
Price of each phone: 
Price of each accessory: 
Step-by-step explanation:
Let be "p" the price in dollars of each phone and "a" the price in dollars of each accessory.
Set up a system of equations:

You can use the Elimination Method to solve the system.
Multiply the second equation by -2 and add both equations:

Substitute the value of "a" into the first equation and solve for "p":

Answer:
C is your answer
Step-by-step explanation: