HELP Which expression is the multiplicative inverse of -11/7 a -7/11
b 1 4/7
c -11/7
b 1 7/4

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

What is the lcm of 16 and 40 ? 24 and 40 ?

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33