39-12w=7-16w need to slove step by step but how?

There are 4 children in Maria's family. In how many ways can you list the children in all possible orders?

If John has 5 apples and gives away 3 how many apples does he have?

A frog is at the bottom of a 15-foot well. Each time the frog leaps it moves up 3 feet. If the frog has not reached the top of the well, then the frog slides back 1 foot before it is ready to make another leap.

Who got them puffbars

How do i get the answer for (c) in this equation ... 6/13=3/c

Gunther is buying baseballs in bags of 10 he has 40 baseballs but needs a total of 70 baseballs for throwing practice.

In the given expression what operation comes first? 10-20/4 (6)

A 78-inch tall man casts a shadow that is 54 inches long. At the same time, a nearby building casts a 48-foot long shadow. Write and solve a proportion to find the height of the building.

What is (x+y+2) (y+1) a y^2+4xy+2 b xy+4y+x+2 c y+x+y+2 d y^2+xy+x3y+2

What is the mode? 35,62,38,8