One of the students wants to send postcards to 18 of her friends. A package Contain 7 postcards. How many packages must she buy

The price of a video game at game world has increased from 36$ to 45$ each. What was the percent increase

12x times 5 equals 8x plus 26

What is the answer for 5*5^-3*5^5

Find for x to four significant digits. 7^x=13

A 2-column table with 9 rows. The first column is labeled year with entries 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013. The second column is labeled precipitation with entries 5.98, 6.05, 7.59, 5.27, 3.11, 7.18, 2.95, 7.22, 2.61.

Mr. Chavis needed to take out a loan for $74,400 for a 2016 XJ luxury Jaguar sedan. If he takes 5 years to pay off the loan at a rate of 5.5%, how much will he pay in interest at the end of the 5 years?

1/5[10-5 (x-2) ]=1/10 (x+1)

Density is a physical property of elements. Write the density formula below

The ratio of the volumes of the two spheres is 27:343 and the sum of their radii is 10 units. Find the radius of the smaller sphere.

A chemistry teacher needs to make 10 L of 36% sulphuric acid solution. The acid solutions available are 30% sulphuric acid and 50% sulphuric acid, by volume. How many litres of each solution must be mixed to make the 36% solution?