A player chooses two cards with replacement from a standard deck. If both of the cards are hearts he wins 25 dollars. If he draws only one heart, he wins 5 dollars. If he draws no hearts he gets no prize. The cost of the game is 4 dollars. Find the expected value of the game for the player.

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers