<h3>
♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>
➷ period = wavelength / speed
period = 100 / 200
period = 0.5s
<h3><u>
✽</u></h3>
➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
↬ ʜᴀɴɴᴀʜ ♡
Answer:
x=4
Step-by-step explanation:
the triangles are directly porportional.
if 2.5 is half of 5, to find x is just half of 8.
Answer:
There is no slope. 
Step-by-step explanation:

(2, 2) and (4,2) makes a horizontal line. All horizontal lines on a graph have no slope.
I'm going to label them from top to bottom 1,2,3,4,5
your answer is 3,4,5,2,1