If a=3i+9j and b=4i-6j, find 5a-3b Write your answer in the form i + j.

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

How many ordered pairs of positive integers satisfy xy=32?