Answer:
3600
Step-by-step explanation:
41*18*4=2952, 2952+(18*18*2)=3600.
It is 74 degrees because those two equations equal each other and you must cancel them out which equals x=15. plug 15 in to one of the equations and you have the answer.
They own a total of 120 CDs.
GIVEN:
Ella: ratio of rock music to total CDs that she owns 25/40
Paolo: has 50 rock music CDs. The ratio of rock music to total CD is equal to Ella's ratio.
Proportion: a/b = c/d where ad = bc
25/40 = 50/x
25x = 40 * 50
25x = 2000
25x / 25 = 2000 / 25
x = 80 total of Paolo's CDs
Total of Ella's CDs = 40
Total of Paolo's CDs =<u> 80</u>
Total CDs in all 120
Answer:
x=2
Step-by-step explanation:
- add like terms (3x-9x= -6x, 7-3= 4)
- then move the constant to the right (-8+4=-12)
- finally divide it by 6 which gives you "x"