Answer:
The answer would be the first one, combining 8 and -2
Step-by-step explanation:
This is because the 2 like terms are 8x^2 and -2x^2. You can get this by looking in the problem. There are 2 terms with x^2 which means we have to combine them. One of them is 8x^2 (the 1st one) and the other is -2x^2 (since it says 7-2x^2)
If you combine these you will get 6x^2 [8+(-2)=6]
64 ounces of a 2% salt solution contains 1.28 ounces of salt and thus 62.72 ounces of water.
The mass of the 10% solution is (x+1.28), where x is the mass of water.
1.28 divided by (x+1.28) must be equal to 10%.
The 10% solution contains 11.52 ounces of water.
51.2 ounces of water must be evaporated.
Answer:
m=1/3
Step-by-step explanation:
so find slope do this
(y^2-y^1)/(x^2-x^1)
so
(1+2)/(-3-6)
1/3
Answer:
Step-by-step explanation:
-3x + 10 = 5x - 8 Add 8 to both sides
-3x + 10 + 8 = 5x Add 3x to both sides
18 = 8x Divide by 8
18/8 = x
x = 2 3/8
x = 2.375
