An urn contains 20 marbles of which 15 are red and 5 are Blue. suppose you randomly choose a marblem, not its color and return it to the urn. you continue this until you have picked a total of 4 blue marbles. What is the probability tha you get an equal number of Red and Blue marbles.

answer: a. 74

step-by-step explanation:

it shows divided evenly, so add the 37+37 = 74

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

answer: answer: d) v= 1/6 bh  

step-by-step explanation:

since according to the given question,   a pyramid is placed inside a prism.

step-by-step explanation:

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol