A shipment of TV sets has a total of 20 TVs. Tivito tvs way 30 kg and watchers TV weigh 50 kg each. The total weight of the shipment is 880 kg write a system of equations that shows how many of each TV are in the shipment

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Express -5 2/5 as an improper fraction.

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?