Answer:
Step-by-step explanation:
Let the required amount is x.
<u>Alcohol content is same at the end:</u>
- x*0.17 + 4*0.2 = (x + 4)*0.19
- 0.17x + 0.8 = 0.19x + 0.72
- 0.19x - 0.17x = 0.8 - 0.72
- 0.02x = 0.08
- x = 0.08/0.02
- x = 4
Answer:
1 1/4 cup of cheese
Step-by-step explanation:
.5+.75
|a+b| + |c| when a= -5, b= 8, c= -13:
|-5+ 8|+ |-13|
= |3|+ 13
= 3+ 13
= 16
The correct answer is D. 16~
2x+4y = 1
3x- 5y = 7
Multiply both equation by a number to get rid of one variable I used y because it had opposite signs so multiply top equation by 5 and bottom by 4
you get,
10x + 20y = 5
12x - 20y = 28
solve the equation we get,
22x = 33
x = 33/22
x = 1.5
substitute this value in other equation to get y
2x + 4y = 1
2(1.5) + 4y = 1
3 + 4y = 1
4y = 1-3
4y = -2
y = -2/4
y = -0.5
so answer is x = 1.5 and y = -0.5
( 1.5, -0.5)
