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skelet666 [1.2K]
3 years ago
5

What's the algebraic expression represents the phrase? Cindy studied seven more hours than Nikki studied. A. n + 7 B. 7 - n C. 7

n D. n/7
Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
6 0
It is going to be (A)

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Describe the nature of the roots for the equation<br> 49x2– 28x +4 = 0
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Answer:

The roots of the equation is real and repeated

Step-by-step explanation:

Here, we want to describe the nature of the roots of the given quadratic equation

To get the nature of the roots, we find the discriminant of the equation

The discriminant is;

b^2 - 4ac

In this case, b = -28 , a = 49 and c = 4

The discriminant is thus;

-28^2 - 4(49)(4)

= 784 - 784 = 0

Since the discriminant is zero, this means that the quadratic equation has real roots which are the same

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The terms are 9 – 4 and 3b + 7a.

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Step-by-step explanation:

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Step-by-step explanation:

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