What is the least common denominator of 3/10 and 1/2

help asp

Ten times the square of a non-zero number is eqaul to ninety times the number

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?