A shop owner bought 30 files and some diaries. he paid $82.50 for the files. each diary cost 10 times as much as a file. what was the cost of each diary?

Two and one-half percent added to four thousandths is equal to what number? A) 12 B) 0 C) 4 D) 2 2/3 E) - 4

Elvin reads 4/7 of his book he has 126 pages left to read how many has he read already

What is the sum? 6x^7 + 8x^7

What is 15 increased by 20%

What are the solution for the quadratic equation y=x^2+11x+24

An angle measuring 75° turns through a circle. Write the fraction for how much of the circle the angle turns through.

y = - 6x2 + 3x + 2 rewritten in vertex form

5,000+300+8 in standard form

What is the greatest common factor of 60 84 24

it takes the earth 24 hours to complete a full rotation. It take the sun approximately 25 days, nine hours, and seven minutes to complete a full rotation. How many hours does it take the sun to complete a full rotation?