Answer: x = -3.625 or -29/8
Step-by-step explanation:
7-8x+22
1. -Set it equal to 0.
7-8x+22=0
2. Subtract 7 and 22 from both the left and right sides.
7-8x+22=0
-7 -22 -7 -22
8x = -29
4. Divide both sides by 8.
8x=-29
8 8
x= -3.625
Leave it in fraction form if decimal is unacceptable.
hope this helps.
Answer:210ml, 140 ml, 60%
Step-by-step explanation:
Given
Juli has 200 ml of 35% hand sanitizer
Sarah has 150 ml of 85% hand sanitizer
The mixture has 60% con. i.e. 60 % is Alcohol and 40 % water
The final volume of the mixture =200+150=350 ml
Now, 60% of 350 ml=
So, pure Alcohol is 210 ml
Water in the final mixture=
The concentration of Alcohol is 60%
C
Because .75 times 9 would give you the price of the books and then you would have to add C, the amount left to get to 20.
Where’s the question I don’t get it