Answer:
1÷27
Step-by-step explanation:
the fraction bar just means to divide so 3/4 is 3÷4
-9! person above was right
Hello There!
<u><em>The volume of a cylinder is pi * r^2 * h. It's a circle times the height. </em></u>
<u><em></em></u>
<u><em>The volume of a cone is (1/3) * pi * r^2 * h. So it is one third of the volume of a cylinder with the same dimensions. </em></u>
There would be a vertical dotted line at -1 and a horizontal solid line at -3. Then you could shade the lower right hand corner.
Answer:
The time it takes for the cannonball to hit the ground is 6.49 seconds.
Step-by-step explanation:
You know that the height of the cannonball above the ground, h, in meters, in time, t, in seconds, is found by the function h(t) = -4.9t² + 30.5t + 8.4. You want to calculate the time it takes for the cannonball to hit the ground, that is, the time it takes for the bullet to reach zero height. So, being h(t) = 0 you have:
0 = -4.9t² + 30.5t + 8.4
To solve a quadratic function 0=a*x² + b*x +c, the expression is applied:

In this case, being a = -4.9, b =30.5 and c =8.4 you have:

Solving you get:
t1= -0.26 seconds and t2=6.49 seconds
Since time does not have a negative value, then <u><em>the time it takes for the cannonball to hit the ground is 6.49 seconds.</em></u>