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I attached a picture this time!

2.94 seconds.

Step-by-step explanation:

The ball will hit the ground when the height of the ball is 0 meters.

The equation is...

h = 61 - 6t - 5t^2.

-5t^2 - 6t + 61 = 0

5t^2 + 6t - 61 = 0

We can use the quadratic formula to solve.

[please ignore the A-hat; that is a bug]

, where a = 5, b = 6, and c = -61.

=

=

=

=

=

Since time cannot be negative, we will not minus the 35.44009029.

(-6 + 35.44009029) / 10 = 29.44009029 / 10 = 2.944009029

That is approximately 2.94 seconds.

Hope this helps!

Step-by-step explanation:

When the ball hits the ground, h = 0

Putting this in the equation:

=>

=>

Taking -1 as common

=>

Dividing both sides by -1

=>

Using Quadratic Equation:

=>t =  

=>

=> t =

Either:

t =       OR     t =

t = 29.44/10      OR     t = -41.44/10

t = 2.94            OR      t = -4.14

Time can never be negative so t = 2.94 secs

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answer: d.) the total number of protons and neutrons is 15

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~

your friendly neighborhood human spider! .

step-by-step explanation:

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without