Why do you have to flip where x is when you are doing porportions

Each side of a square x units long is decreased by 9 units. which expression represents the area of the new square in square units?

Pizza is served in the school cafeteria every fourth school day. Tacos are served every third school day. Both Pisa and tacos were served today. In how many school days will pizza and tacos be served on the same day again?

Penny had $117, which is 9 times as much money as Kari had. How much money did Kari have?

Why does dividing by 100100 shift each digit two places to the right?

The measure of angle EJB is the measure of angle BOE. The measure of angle BDE is the measure of angle BOE. The measure of angle OED is the measure of angle OBD.

You are trying to order 14 pound of saffron, but the ordering system wants a decimal.

Solve the system by substitution verify your solution by checking that it satisfies both equations of the system y=2x 3x-y=15

the total amount of flour in a bakery after receiving new stock equal to 3/10 of its current stock (x)

Last week, about 621,860 viewers watched a television show on sharks. what is the greatest whole number that rounds to 621,860?

If two squirrels live in one square m of a 50 square m park, what is the park's estimated squirrel population