How many solutions exist for the system of equations given below?

3a + 4b = 20

12a = 80 - 16b

8.96 is what percent of 112

Which graph best represents the equation - 5X+2Y=2

Mark gave the waiter 200$ for the bill and a 23% tip. What was the cost of the tip

What are three different complex fractions that simplify to 1/4

A satellite is orbiting the Earth at the rate of 25 kilometers per minute. How far will it travel in two hours? a. 3000 kilometers b. 50 kilometers

How do you couculate Pi? So I can continue to find the number by hand. I'm trying to beet my classmates in who can get highest but I don't know how to find the numbers.

The probability that Lexie is on time for given class is 98 percent. If there are 89 classes during the semester, what is the best estimate of the number of times out of 89 that Lexie is on time to class?

Simplify each expression (show your work) 1. 3 (2x+4) 2. - (5y-2) 3. - 5 (3n+1)

An audio cable is 16.3 dm long. How long is the cable in meters?

What is the sum of the interior angles of a regular shape witj 6 sides