Solve each system by substitution.

6x - y + 2 z = 4

2 x + 3 y - 3 z = - 5

4 x + 2 y + 5 z = - 9

Which expression best represents the difference between triple a number and double a number?

The Law of Syllogism is an application of deductive reasoning. True or False

Situation: Find the age of the skull to the nearest year. A hiker in Africa discovers a skull that contains 41% of its original amount of C- Enter the correct answer.

What type of number cannot be written as a fraction P over Q where P Inc. you are integers and Q is not equal to zero A. An irrational number B. A rational number C. All numbers can be written this way D. Decimal

How many ml of 1:4 solution and how many ml of sterile water are needed to prepare 600 ml of 1:20 solution?

2 times 2 plus 10 plus 200 plus 56

Y varies inversely with x and y = 5 when x = 2. Which is the inverse variation equation for the relationship? A y=1/2x B y=x+2 C y=10/x D y=2x

F (x) = 3x^2-2x g (x) 9x^2-x+7

Put each number in order form least to greatest

Every week for 20 weeks, Kathy earned $15 for mowing lawns and $35 for delivering newspapers. At the end of 20 weeks, she stopped mowing lawns and delivering newspapers and spent $300 .