Answer:
<h2>altitude = 5</h2>
Step-by-step explanation:
Look at the picture.
Use the Pythagorean theorem:

<em>subtract 144 from both sides</em>

Answer:
2 ½ miles
Explanation:
mph = miles per hour, which means that if robert had run for the full 1 hour, he would have run 3 ⅓ miles.
however, since he only ran for ¾ of an hour, which is equal to 0.75, we can multiply the 3 ⅓ miles by 0.75 to get 2.5 or 2 ½ miles.
i hope this helps! :D
Answer:
The value of f(-2) is 1/2 or it can be written as 0.5.
Step-by-step explanation:
The given function is

We have to find the value of f(-2).
Substitute x=-2 in the given function to find the value of f(-2).




Therefore the value of f(-2) is 1/2 or it can be written as 0.5.
168cm2
Let r cm be the radius of the balloon, then
<span>2pi(r)=23=>r=23/(2pi) </span>
<span>The surface area= </span>
<span>4pi(r^2)= </span>
<span>4pi[23/2pi)]^2= </span>
<span>(23^2)/pi=168.386 cm^2 </span>
<span>approximately.</span>