Answer:
36 feet
Step-by-step explanation:
Given

Required
Determine the maximum height attained
First, calculate the time to reach maximum height;
In a quadratic equation;

The maximum is:

So, we have:

Where

So:





The maximum height is at: 
So, we have:



Answer:
20 gallons
Step-by-step explanation:
If 4 big water bottles can hold 8 gallons then just multiply 10x2 because that is double the amount.
Answer:
the area is 30 correct me if Im wrong
Step-by-step explanation:
Answer:
2,144.7
Step-by-step explanation:
The formula for the volume of a sphere is V=4pi r^3/3. Lets apply this formula for your sphere. The radius is 8, so lets plug in 8 in our formula. 4pi 8^3/3. Now, lets solve. 4 times pi. What is pi? We usually think of pi as 3.14. 4x3.14 is 12.56. Now, lets do 8^3/3. 8 times 3 is 512, and divided by 3 is 170.67. Alright, now we have 12.56 times 170.67. That is 2144.7 rounded to the nearest tenth.
The answer is step 3. Step 2 is suppose to be 3 x 7 and the answer is 21 but he writes 7 in step 4