Ms. martin has 7,000 dollar in her saving account , alonzo has 1 /10 as much money in his account as ms. martin, how much money does alonzo have in his account?

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Divide. –4.2 ÷ 6 = a –0.7 b 0.7 c –7 d 7 me