Given a matrix where every cell has some number of coins. count number of ways to reach bottom right from top left with exactly k coins. we can move to (i+1, j) and (i, j+1) from a cell (i, j).

Translate the sentence into an equation. The sum of 3 times a number and 7 is 9. Use the variable w for the unknown number.

What comes first, length or width?

How to solve (4x-7) ^2=44

What is multiplicative inverse

What is 2 divided by 3

32 feet is what percent of 244 feet?

A restaurant served 85 halves of cantaloupe during a busy weekend. How many whole cantaloupes is this?

Erik's disabled sailboat is floating stationary 3 miles east and 2 miles north of Kingston. A ferry leaves Kingston heading toward Edmonds at 12 mph. Edmonds is 6 miles due east of Kingston. After 20 minutes, the ferry turns, heading due south.

Which of the following could be the measures of the three angles of an acute triangle? ... A ... 40°, 40°, 100° ... B ... 30°, 60°, 90° ... C ... 50°, 55°, 75° ... D ... 30°, 30°, 120°

Li rolls a 1-6 number cube and flips a coin. What is the probability that he rolls an en odd number and flips tails?