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vladimir1956 [14]

3 years ago

7

The scatter plot below shows one class of Spanish students’ time spent studying for their final versus the grade that they earne

d on the final. If a student studies for 75 minutes, what is the best estimate for his or her grade?
A.100
B.90
C.45
D.75

1 answer:

Archy [21]3 years ago

8 0

I think is C I’m not sure

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Assume P(xp,yp), A(xa,ya), etc.
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Step-by-step explanation:

The general form of a quadratic polynomial is given by:

$ax^2+bx+c$ (1)

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$3x^2-10x+8$ (2)

In order to complete the factorization you can use the quadratic formula, to obtain the roost of the polynomial. The quadratic formula is given by:

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By comparing the equation (1) with the equation (2) you obtain:

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Then, you replace these values in the equation (3):

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Then, the factorization of the polynomial is:

$3x^2-10x+8=(x-x_1)(x-x_2)=(x-2)(x-\frac{4}{3})$

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