Tell whether the sequence is arithmetic. If it is, what is the common difference? 10,15,21,28 ...

Two chefs are trying to break the world's record for the longest strand of spaghetti. Chef A measures his spaghetti strand to be 503 2/3 ft. Chef B measures his spaghetti strand to be 503.7, the judges declare Chef B the winner.

The sum of n A. M.'s between two numbers is 20. If the last mean is double of the first and one number is three times the other, then find the number

What is the answer to this question 4^6*4^3?

Roger started with 90 items in his MP3 collection. Each month, he buys 15 more MP3s to add to his collection. The number of MP3s in his collection, P, is given by P = 15m + 90, where m is the number of months he has added 15 MP3s to his collection.

Write the number. 12ones6tens2hundreds

Simplify the algebraic expression: 15xy - 13 + 4x + 3y + xy + 21

At 3:00 ok a truck and a car leave the same intersection traveling in the same direction. The truck is traveling at 43 mph and the car is traveling at 58 mph. At what time will they be 12 mi apart?

Express the recurring decimal 0.56 as a fraction in its simplest form

A square garden plot measures 44 yards on each side. What is the length of the diagonal of this plot?

What are the roots of the equation X squared plus 6X - 9 equals zero?