Are 5√2 and 5 like radicals ? can we simplify them into 10√2 ?

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

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