Answer:
2 gallons of pure alcohol
Step-by-step explanation:
Let x represent the number of gallons of pure alcohol needed, and create an equation:
4(0.25) + x(1) = (x + 4)0.5
1 + x = 0.5x + 2
x = 0.5x + 1
0.5x = 1
x = 2
So, 2 gallons of pure alcohol should be added.
Answer:
63
Step-by-step explanation:
Because 30 percent of 90 equals 27
Thus
90 - 27 = 63.
Please mark brainliest and give 5 stars.
Answer:
a=4 and b=-1
Step-by-step explanation:
2(4)+3(-1)= 5
Answer:
If you look at the different triangles in the star they give you two angles....
all of the points in a triangle would be equal and you just subtract 24 from 105
x is 24 and y is 81
Step-by-step explanation:
Answer:
Associative properties of multiplication
