Which of these num. are prime:

1, 11, 21, 51?

a team of runners needs to run a 1/4 mile relay race. if each runner must run 1/16 mile, how many runners are needed

Roger went on a 3-day hike. He walked 5 3/4miles on the first day, 7 1/6miles on the second day and 4 7/8miles on the third day. How many miles did he walk altogether? A. 16 11/24miles B. 17 3/8 miles C. 17 3/4miles D. 17 19/24 miles

Find 46 percent of 80

A deck of cards has 52 cards there 4 suits, diamonds, hearts clubs and spades each suit has 13 cards what is the probability that I will randomly pick a king

A baseball team has home games on Wednesday and Saturday. The two games together earn $5445.00 for the team. Wednesday 's game generates $1005.00 less than Saturday 's game. How much money was taken in at each game?

The sum of three numbers is 6. the third number is the sum of the first and second numbers. the first number is one more than the third number. Find the numbers

What is the final amount if 975 is increased by 1% followed by a further 9% increase? Give your answer rounded to 2 DP.

82 = 2 (1-8p) step by step

Find the simple interest of $2300 invested at 7.5%for 10years

Kelly shows all the ways to make 49 as tens and ones. What ways does she show