Solve by elimination:

-6x+3y=-4

-20x+10y=20

i know the answer is no solution, but i need to know why.

What is 24 1/8 written in decimal measurments

Solve the inequality. Write your answer using interval notation. X (x - 1) (x + 4) > 0

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The sun produces 3.9 x 1033 ergs per second of radiant energy. How much energy does it produce in one year (3.1 x 107 seconds) ?

Graph the direct variation y=-1.5x. Using the graph, find: The value of x when y=-3; 4.5; 6 When y = - 3, x = ? When y = 4.5, x = ? When y = 6, x = ?

A number plus 5 more than 3 times the number is 37. Find the number

A biker traveled 20 miles in 4 hours. A unit rate to describe this would be 5 miles per hour. What is another unit rate in this situation?

On Monday, a local hamburger shop sold a combined total of 504 hamburgers and cheeseburgers. The number of cheeseburgers sold was three times the number of hamburgers sold. How many hamburgers were sold on Monday?

How to subtract micro fractions

A rancher has 4000 ft. of fence for constructing a rectangular corral that is divided into 3 equal sections. one side of the corral will be bounded by his barn and needs no fencing.