The answer is B
hope this helps
Answer:
X = 5
Step-by-step explanation:
1.- Write down your equation backwards so its easier to answer
2.- then subtract 7x and 3x
3.- write down the rest of your equation, 4x - 2 = 26
4.- subtract -2 on both sides now you have, 4x = 20
5.- Divide 4 on bothe sides
6.- and you should have the answer, X=5
Answer:
9
Step-by-step explanation:
Divide 135 by 15.
Answer:
I think that is the answer to this math work 5 × 3= $15 7 × $4.20=$29.40 All together it will be $44.40
Answer:
90 and 30 liters
Step-by-step explanation:
1) if solution of 20% is 'x' and of 60% is 'y' liters, then
2) the pure chlorine is: for solution of 20% - 0.2x, for solution of 60% - 0.6y and
3) the mix of the two solutions is 120=x+y.
4) using these items it is possible to make up the system of two equations:

5) finally, x=90 liters of 20%; y=30 liters of 60% solution.