Nancy has 12 books in her library. she bought several books at a yard sell over the weekend. She now has 97 books in her library. How many books did she buy at the yard sell?

Does a negative minus a negative equal positive

mario takes another science tes. is it possible for mrio to raise his average to 90% for the two tests if the second test also has 50 questions? explain your answer

Find the volume of the triangular pyramid to the nearest whole number. the base is 12 the height is 17. and the apothem is 10 inches they are all inches.

Is 10inches bigger or smaller then 3 ft

What is the difference between the number of the students who prefer history to English? 45 10 55 35

Algebra 1 what is the solution to the system? 7x+5y=19 -7-2y=-16 A: (2,1) B: (1,2) C: (7,5) D: (-7,-2)

6x (-3) I don't understand I need answer

A plant has a height of 8 1/4 inches what is the height of the plant after it grows 1 7/8 inches?

Edin has £300 in his savings account. His bank offers him a fixed 5% simple interest rate per annum, for a period of 3 years. How much interest will he have earnt after 3 years?

Malik scores 24 goals in 8 soccer games. At that rate, how many goals will he sore in 15 games?