Suppose you have 30coins that total to $2.10 some of these coins are pennies and the rest are dimes which system of equations can be solved to find the number of each type of coin you have

What is the factorization of 729x15 + 1000?

Write an expression that uses partial products to multiply 8 x 64

What value of q is a solution to this equation: 130 = q (-13)

What is the value of the expression 3 (10-2to the power of 3) + 7

Jeremy bought four books the cost of three of the books were $13, $10 and $15. the average cost of the four books is at least $14. what is the minimum cost of the fourth book?

120 decreased by 45%

A coral reef grows 0.11m every week. How much does it grow in 14 weeks? Write your answer in centimeters.

A biologist is studying the composition of birds on a lake and counts 61 ducks, 17 geese, 11 cranes, 15 swans, and 6 herons.

During a heavy rain storm, a city in Florida received 12 1/4 inches of rain in 25 1/2 hours what is the approixmate rainfall rate in inches per hour

Working her way through school, Julie works two part-time jobs for a total of 35 hours a week. Job A pays $6.10 per hour, and Job B pays $7.40 per hour. How many hours did she work at each job the week that she made $235.