How can I figure out the answer to 7+5=_+6

Robin has triple as many marbles Amy. Sam has 15 more marbles than robin. Together they all have 99 marbles. How many marbles does each person have

When drawing a card from a Spanish deck (40cards), calculate the probability of the following events: a) Take out a king or a figure. b) A king does not come out or a king comes out. c) Take out a coarse or a figure

Will give brainiest answer! 1. Why do people usually fall into the trap of using filler words? A.) They don't realize they shouldn't. B.) They don't have a plan or they get nervous and forget their plan. C.) They are ignorant. D.) They are teenagers.

A certain smartphone family plan costs $55 per month plus additional usage costs. If x is the number of cell phone used above the plan amount and y is the number of megabytes of data used above the plan amount, interpret the following expressions a.

Kory is divided Thai food for several friends. She needs triple recipe. The recipe calls for 3/4 teaspoon of curry. How much curry does she need?

The cost for 7 dance lessons is $82. the cost for 11 is $122. write a linear equations to find the total cost C for L dance lessons. How much for 4 lessons?

What is 9.09 repeating as a fraction?

The number of gallons of water in a tank that already has 300 gallons in it after being filled at 35 gallons per minute for m minutes

The Tennis Teams of Atlanta need to older tennis balla for the upcoming tournament. They will need 2,367 tennis balls. If each can hold 5 tennis balls, how Many will they purchase

42 is subtracted from 42% of a number. The result is 42. What is the number?