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babymother [125]
1 year ago
5

Suppose you throw a ball straight up from the ground with a velocity of 256

Mathematics
1 answer:
Dovator [93]1 year ago
4 0

Answer:

Below in bold.

Step-by-step explanation:

a. h after 4 seconds:

h = -16(4)^2 + 256(4)    

    = -256 + 1024

    =  768 ft

b.   When the height is 1008 ft

     1008 = -16t^2 + 256t

     16t^2 - 256t + 1008 = 0

      16(t^2 - 16t + 63) = 0

       16(t - 7)(t - 9) = 0

        t = 7, 9

      So it will take 7 seconds to rise to 1008 feet and and after 9 seconds        it will pass 1008 on the way down

     So the times are 7, 9 seconds.

c.  When the ball reaches the ground h = 0:

    -16t^2 + 256t = 0

    -16t(t - 16) = 0

      t - 16 = 0

      t = 16 seconds.

   

 

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By solving a linear equation, we will see that the total cost for renting the bus is $90.

<h3>What was the total cost of renting the bus, in dollars?</h3>

Let's say that the total cost is C.

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When the other 10 students are added (for a total of 30) each student pays:

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We know that the cost for each of the original 20 students decreased by $1.50, so:

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Then we have 3 equations to work with:

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Now we can replace the first and second equations into the third one:

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C*(30/600 - 20/600) = $1.50

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If you want to learn more about linear equations:

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4 0
2 years ago
Please help!! I Will give brainliest!! Just the coordinates will be fine!!
Lerok [7]

Answer:

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Step-by-step explanation:

Basically switch the x and y axes, and depending on the quadrant, switch the negative and positive signs to their appropriate ones.

hope this helps!

please heart and five-star it if u have the chance! :D

6 0
3 years ago
3/4x-2=2/5<br> Rewrite so there is no fractions
jek_recluse [69]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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Hoochie [10]
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</span>
7 0
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Whats is 3/5 as a percent
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6 0
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