What is the value of x if mab=45 and mcd=42, and how did you get the answer?

What is the greater volume 72 quarts or 23 gallons

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /