Alarge adult kangaroo can have a mass of 90,000 grams. how many kilograms is it. (1g =1,000g)

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Standard deviation of 19,29,21,22,23

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x