What is x, y and z? show your work

x - y + 9z = - 27

2x - 4y - z = - 1

3x + 6y - 3z = 27

Write a mixed number

The amount of bacteria, f (x), observed by a research scientist is represented by the function f (x) = 3x + 7, where x is the number of hours passed since initial observation.

How many tablespoons are in 5 pints of ice cream? Show the path you take to convert pints to tablespoons.

25. Which is an example of an operation? A) 12 B) 6ab C) + D) y

A triangle with an area of 23 cm² is dilated by a factor of 6.

A plumber charges $45 for a service call plus $25 for each hour that he is working at a customer's house. If he conducts a service call that takes 3 hours, what will the customer's bill be?

Which problem can be solved using this equation? 0.15m+35=0.25m+20

Rick and Ranger sell Toyotas for Tom's Auto. Over the past year they sold 360 cars. Assuming Rick sells 5 times as many as Ranger, how many Toyotas did Ranger sell?

During his first vet visit, Pedro's puppy weighed 6 1/8 pounds. On his second visit, he weighed 9 1/16 pounds. How many weight did he gain between visits?

N the numerical sentence below, A = 8, D = 1/2, and F = 1/4. What are the values B, C, and E if the sentence below is equivalent to the numerical sentence, 2 * 4 = 8?