Answer:
11x - 21
Step-by-step explanation:
2(4x-3)-3(5-x)
Distributive property
= 8x - 6 - 15 + 3x
Combine like terms
= 11x - 21
(10m-30) = 28. 28 plus 30 is 58 and 58/10 is 5.8. M is 5.8.
(x-y)^2 +4xy = (x+y)^2
FOIL
x^2 -2xy+y^2 +4xy = (x+y)^2 x^2 -2xy
Combine like terms
x^2 +2xy +y^2 = (x+y)^2 x^2 +2xy
Factor
(x+y)^2 = (x+y)^2 (x+y)^2
Set up a proportion
3 coins:8 notes and then the other one 24 coins : x (unknown notes)
they have a relationship so we can set them equal to each other.
3/8=24/x cross multiply: 8 * 24 = 192
Now divide that by 3: 192/3 = 64
So there are 64 notes in the bag
