Hello sorry, I said that I was in college and I'm not ... I'm in 7th grade, Ummm can you help me with some math, I have an exam ...The number of CDs in Walter’s collection can be represented by x. • The number of CDs in Brian’s collection is 3 times the number in Walter’s collection.
• The total number of CDs in both collections is 144.

What is x, the number of CDs in Walter’s collection?

x=36

Explanation: If you multiply 36 by 3 you get 108 (36 x 3 = 108) Then you add those two together and you get 144 (36 + 108 = 144) so x= 36. Hope this helps.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

dont think so

step-by-step explanation: