What is the solution to this system of equations? a+b=9 a-b=3

a

(6, 3)

b

(-6, 3)

c

(6, - 3)

d

(-6, - 3)

816 floats were in the parade that lasted 4 hours. Every time 6 floats passed by city hall, the parade stopped. How many times did the parade stop?

A bus takes 2 hrs less for a journey of 300 km, if its speed is increased by 5km/hr from its usual speed, then the usual speed in km/hr is

Hummingbird has a wing beat of about 200 beats per second. How many wing beats would a hummingbird have in 3 minutes

Small publishing company is planning to publish a new book. The production cost will include one time fixed costs (such as editing) and variable costs (such as printing). There are two production methods it could use.

Jill, who lives in City C, plans to visit 3 different cities, M, L, and S. She plans to visit each city exactly once and return to City C after the 3 visits. She can visit the cities in any order.

The sum of two numbers is - 1. when twice the first number in four times the second number are added, it equals - 10. what are the two numbers?

You have 48 grams of a radioactive kind of xenon. If it's half life is 9 hours, how much will be left after 18 hours?

7 lb 12 oz Or 124 oz greater or equal

For the particular problem raised in the introduction, assume that the total bill is $44. to answer the question "how should the bill be split?" we will create a linear equation.

An item is regularly priced $75. Ali bought it at a discount of 60% off the regular price. How much did Ali pay?