Answer:
After 3 seconds
Step-by-step explanation:
Given

Required
Seconds to attain maximum height
The maximum of a quadratic function
is calculated using:

So, we have:

Where:
and 
So:


Cancel out negatives


Answer:
<h2>1</h2>
Step-by-step explanation:
Use the Pythagorean theorem:

We have

Substitute:

<em>subtract 9 from both sides</em>


Answer:
okay so each cookie costs 1.15 and the equation is (2.80 divided by 7) + 0.75 = c
Step-by-step explanation:
Hope that helps:)
Actual distance is 75 miles
1 inch = 15 miles
Multiply 5x15
Gives you 75