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3 years ago

I need help . Im so confused.

Mathematics

1 answer:

jeyben [28]3 years ago

3 0

Well, first it would be easier to convert then into improper fractions first. The answer can be x. It would be (-25/6)/(-7/4)=x. Flip the 2nd fraction to turn sign into multiplication. (-25/6)*(-4/7)=x. Remember, negative by negative is positive. 100/42=x. Simplify, x= 2 8/21.

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Answer:

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Step-by-step explanation:

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Answer:

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3 years ago

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Step-by-step explanation:

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3 years ago

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Gennadij [26K]

<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:

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

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4 years ago

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Answer:

Step-by-step explanation:

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4 years ago

Read 2 more answers