What is 5x2 - (4+12-3)

Let a be an irrational number. Is a⋅25 rational or irrational?

7 indian and 4 chinese finish a job in 5 days. 7 japanese and 3 chinese finish the same job in 7 days. given that the efficiency of each person of a particular nationality is same but different from others.

A high school graduating class is made up of 498 students. there are 188 more girls than boys. how many boys are in the class?

A table and 8 chairs weighs 235.68LB together. If the table weighs 127.84LB, what is the weight of one chair in pounds?

The diameter of a semicircle is 6 yards. What is the semicircle's perimeter?

Graph the system. What is the solution and what does it represent

Solve x2 = 12x - 15 by completing the square. Which is the solution set of the equation? A ... (-6-square root of 51,-6 + square root of 51) B ... (-6 - square root of 21,-6 + square root of 21) C ...

The product of two numbers is 4235. If one number is 7, find the other number

How do you solve (-1) ^2

Identify the type of system for y=-x+4 and 2x+2 y=8