At what value of x do the graphs of the equations below intersect?
2x − y = 6
5x + 10y = −10

What is the standard form of -5x^2+2x^4-11+x^3+3x

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?