Answer:
a = d+c - r
Step-by-step explanation:
a - c = d - r
Add c to each side
a - c+c = d - r+c
a = d+c - r
You have to multiply on this one because example you go to the restaurant and eat so you pay but you have to put tips for the workers so its saying how much was total in all plus the tips
Slope = (4 + 9)/(3+8) = 13/11
answer
slope = 13/11
The system:
- 12 c + 3 d = 6
- 3 c + 6 d = - 9
----------------------
The 1st equation:
- 12 c = - 3 d + 6 / * ( - 1) ( multiple both sides by -1 )
12 c = 3 d - 6 / : 12 ( divide both sides by 12 )
c = d / 4 - 1/2
Answer:
C ) c = 1/4 d - 1/2
Answer:
3 gallons
Step-by-step explanation:
Let
x ----> the amount of pure acid (100% solution) in gallons
Remember that
we know that
solve for x
therefore
3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in order to get a 60% acid solution
