Solve 4√2+5√4 and explain whether the answer is rational or irrational. A. The answer 4 √2+ 10 is irrational because the sum of a rational number and irrational number is an irrational number.

B. The answer 9 √6 is irrational because the sum of a rational number and irrational number is an irrational number.

C. The answer 4 √2+ 10 is rational because the sum of a rational number and irrational number is an rational number.

D. The answer 9 √6 is rational because the sum of a rational number and irrational number is an rational number.

Convert the cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation. choices: r4 = -4r2 r2 = 4cos2θ r2 = 4sin2θ

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?