mel paid for three-fourths of the cost of a cake and Gretchen paid the rest. If Mel paid $21, how much did Gretchen pay

5/y + 7/x = 24 12/y + 2/x = 24, find the ratio of x to y.

Find t24 for the sequence 100,64,28 ...

What is the simple interest owed on $900 for 9 months

Erin's water bottle holds 665 milliliters. dylan is carrying two water bottles. each one holds 0.35 liters. who is carrying more water? how much more?

Of the 75 boys in the 7th grade class, 25 participate in at least one sport. Of the 120 girls in the 7th grade class, 30 participate in at least one sport.

Daren spends 39 minutes studying for his Science test. He then does 6 chores. Each chore takes him 3 minutes. How many minutes does Darren spend studying and doing chores?

Adante begins to evaluate the expression 3 and one-third times 5 and one-fourth using the steps below.

Joe buys a 4 1/2 pound bag of dog food every 4 weeks, joe feeds his song the same amount each day. What is the number of pounds the dog eats each year?

What is 6.78 and 8.21 rounded to tenth nearest tenth

A circle has diameter 11cm A square has side length 7cm Use Pythagoras' Theorem to show that the square will fit inside the circle without touching the edge of the circle.