How do you get 12 by using the numbers nine and three and two and six but you can only use each number once in each operation which is adding subtracting multiplying and division only once number

Ahigh definition tv cost $800 with a down payment of 2/5 of the cost. how much is left to pay, in dollars after the down payment has been made?

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)