A method of solving a system of equations in which one variable is replaced by an expression using the other variable as a representation for that variable.

I need to know what this is called

Factor the following expressions: (12a-1) ^2-1

What is 1900099+23456554

What are the roots of the equation x^2+6-9=0

How does 10 to the 2nd power - 8 + 4 x 3 = 288?

How do you factor 5y2 - 12x - 9

Tom had $84.50 and then spent $12.25 for a music CD, $17.85 for a gift, and CV$15.45 for gasoline. How much did he have left?

Answer quickly for 5 star and brainliest! A hot air balloon is 10 meters above the ground and rising at a rate of 15 meters per minute. Another balloon is 150 meters above the ground and descending at a rate of 20 meters per minute.

A recent poll shows that 35% of adults are in favor of increased funding for education. The number of adults surveyed for the poll was 260. How many of the adults surveyed were in the favor of increased funding for education?

What is the number 8.293 round in the tenths

What is the answer for 5 1 - = - + d 6 3