Answer:
$11.50
Step-by-step explanation:
138 ÷ 12 = $11.50
For this case we have the following quadratic equation:
Where,
t: time
s: height of the ball
By the time the height is 20 feet we have:
Rewriting the polynomial we have:
Using the quadratic formula we have:
Substituting values we have:
Doing the calculations we have the roots are:
Answer:
the time when the football will be 20ft above the ground is:
B) 0.73 seconds or 1.46 seconds
Dog No dog Total
Cat 31 10 41
No cat 24 7 31
Total 55 17 144
Answer:
The volume of the sphere is 904.32 mm³.
Step-by-step explanation:
Given that the surface area of the sphere is 452.16 mm², to determine what the volume of the sphere is, the following calculations must be performed, knowing that the surface area is obtained through the formula 4 x radius ^ 2 x π, and the volume of the sphere through the formula V = 4/3 πr³:
4 x radius ^ 2 x 3.14 = 452.16
4 x radius ^ 2 = 452.16 / 3.14
4 x radius ^ 2 = 144
radius ^ 2 = 144/4
radius = √36
radius = 6
4/3 x 3.14 x 6³ = Volume
1,333 x 3.14 x 216 = Volume
904.32 = Volume
Therefore, the volume of the sphere is 904.32 mm³.