Compare these two numbers which one has a greater value
8.5 x 10^23 or
9.99 x 10^21

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?