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defon
3 years ago
8

ALLL MY POINTS PLSSS HELPPPPP

Mathematics
2 answers:
mash [69]3 years ago
5 0

Answer:

The answer is right

Step-by-step explanation:

100% sure

Rama09 [41]3 years ago
3 0

Rewrite the given quadratic equation in standard form: Kx 2 + 2x - 1 = 0  

Discriminant = 4 - 4(K)(-1) = 4 + 4K  

For the equation to have two real solutions, the discriminant has to be positive. Hence we need to solve the inequality 4 + 4K > 0.  

The solution set to the above inequality is given by: K > -1 for which the given equation has two real solutions.

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We can use two different ways to solve this equation:

Because the board is 25 off, we can multiply the price and subtract the result:

30 - 0.25(30) = 30 - 7.5 = $22.50

We can also solve by multiplying the total price by 0.75

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