Which shows all the prime factors for 84?

2 answers:

4 0

Your answer will be B) 2 x 2 x 3 x 7

they are all prime numbers as they cannot be simplified anymore, and they add up to 84.

hope this helps

Usimov [2.4K]3 years ago

3 0

B ) 2x2x3x7, Which can also be written as (<span>2^2) x 3 x 7.
Its B </span>

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A parabola has zeros at (5,0) and (-3,0) and passes through point (6,18) determine the axis of symmetry

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Answer:

The axis of symmetry is $x=1$

Step-by-step explanation:

we know that

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A pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. The height, h, of th

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<h2>Explanation:</h2>

In this problem we have a pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. So the height, h, of the pumpkin at time t seconds after the launch can be modeled by the equation:

$h(t) = -16t^2 + 84t + 20$

So this is the equation of a parabola. The maximum of this parabola occurs at its vertex. So let's find this vertex:

$\text{The x-value of the vertex is}: \\ \\ t=-\frac{b}{2a} \\ \\ \\ Where: \\ \\ a=-16 \\ \\ b=84 \\ \\ c=20 \\ \\ \\ t=-\frac{84}{2(-16)} \\ \\ t=-\frac{84}{-32} \\ \\ t=\frac{21}{8}=2.625 \\ \\ h(2.625)=-16(2.625)^2+84(2.625)+20 \\ \\ h(2.625)=-110.25+220.5+20 \\ \\ h(2.625)=130.25m$