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Nataly [62]
3 years ago
5

A trebuchet launches a projectile from ground level on a parabolic arc at a velocity of 40 feet per second. The equation h = −16

t2 + 40t models the projectile's h height at t seconds. How long will it take for the projectile to hit its target on the ground?
Mathematics
1 answer:
Reptile [31]3 years ago
6 0

Answer:

Step-by-step explanation:

If the projectile is hitting something on the ground, it has a height of 0.  Sub in a 0 for the h and factor to solve for t:

0=-16t^2 + 40t

Factor out a -16t to get

0 = -16t(t - 2.5) which means that either t = 0 or t = 2.5

I'd say it has to be t = 2.5, don't you?  ; )

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Answer:

Whitney can bring <u>6 friends.</u>

Step-by-step explanation:

The reason why is this:

Whitney is bringing 400 pounds of things plus <u>her own body weight! </u>

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If we add on Whitneys total weight thats:

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<u>Adding on another friend would be 1,790 pounds which would be over the weight limit for the vehicle. </u>

Hence, Whitney can bring along 6 friends for her birthday.

<em>Hope this helped! :)</em>

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3 years ago
2. Use the graph to write an equation for the parabola. (1 point)
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Answer:

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Step-by-step explanation:

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3 years ago
Solve for the variable in the following proportion.
erastovalidia [21]

Answer:  b = 10

Step-by-step explanation:

We want a ratio of b/2 that is equal to the ratio of 1/4 to 1 1/4 (or 5/4).

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Check:  Does 10/2 = (1/4)/(5/4)?

Yes

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morpeh [17]

Based on the given current and the given resistance, the voltage of the current is 14 + j8

<h3>How to determine the voltage of the current?</h3>

From the question, we have the following parameters

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This can be rewritten as:

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Read more about current and voltage at:

brainly.com/question/14883923

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