3 years ago

How to find excluded values ?

1 answer:

5 0

Hello,

The method is to find the roots of the denominator.

x²-2x-15=x²+3x-5x-15=x(x+3)-5(x+3)=(x+3)(x-5)

Roots are x=-3 and x=5

Answer C

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3 years ago

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Darlene kicks a soccer ball off the ground and in the air, with an initial velocity of 34 feet per second. using the formula h(t

monitta

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chubhunter [2.5K]

Answer:

$\large\boxed{y=3(x-2)^2-8}$

Step-by-step explanation:

The vertex form of an equation of a parabola y = ax² + bx + c:

$f(x)=a(x-h)^2+k$

(h, k) - vertex

$h=\dfrac{-b}{2a},\ k=f(h)$

We have the equation:

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Substitute:

$h=\dfrac{-(-12)}{2(3)}=\dfrac{12}{6}=2\\\\k=f(2)=3(2^2)-12(2)+4=3(4)-24+4=12-24+4=-8$

Finally:

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2 years ago

There are 40 runners in a race. How many ways can the runners finish first, second, and third?

k0ka [10]

Answer:

117600

Step-by-step explanation:

50 x 49 x 48 = 117,600 ways

You have 50 possible for 1st, 49 for 2nd, 48 for 3rd

Permutations 50P3 = 117,600

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2 years ago