Answer:
Well from where the equation is now, I don't see any further things I can do. What is the context of the problem?
Step-by-step explanation:
1 joule = 6,242e+18ev
20 joule = 20 joule *6,242e+18 ev/joule =1,248e+20 ev
1,248e+20 ev / (10 ev / photon) =1,248e+19 photons.
Last option is your answer ( 0.00000991)
Plug in 3 for f(x)
f(3)=(3)²+7
f(3)=9+7
f(3)=16
Hoped this helped!
We know that the perimeter is the all the sides added up together. Generally, you have
, where l is length and w is width.
For a square, all sides are of the same length, so you can write
, where x is any side.
If the smallest perimeter is 14, then
, so x is 3.5. If the largest perimeter is 72, then
, so x is 18.
Therefore, you have 3.5 ≤ x ≤ 18.