How many different computer passwords are possible if each consists of 4 symbols, and if the first one must be a letter and the other 3 must be digits?

Jason needed to string 450 guitars. He strung 30 guitars per day for 5 days. After that his boss told him he had 6 more days to finish stringing the rest of the guitars. How many guitars did he string per day the rest of the time

Why do engineers use math

Dalton has 1,168 marbles, Juan has 1079 marbles, Gilbert has 987 marbles, and Lydia has 199 marbles. Who has the greatest number of marbles? A. Dalton B. Juan Gilbert D. Lydia

A diver begins at sea level and dives down 200 feet. He ascends at a steady rate of 12 1/3 feet per minute for 4.5 minutes. Which of the following numerical expressions represents the final depth of the diver?

an ant travels at a constant rate 20 centimeters every 2 minutes at what pace does the ant travel per centimeter

Sequence number fill in the blanks: 2,?,?,?,?, 21

Alison had lost some puzzle pieces. She found 3/10 of them under the coffee table and another 4/10 of them under the couch. How much is she still missing?

Write 48 hundredths as a fraction and a decimal.

Give a word problem for multiplying or dividing negative numbers

Subtracting fractions Finding the value of each expression in lowest terms. 7/4-8/5=