Please help me ASAP

1) if you put 25ml of concentrate in a glass, how much water should be added?
2) if you put 140ml of concentrate in a glass, how much water should be added?
3) if you put 90ml of concentrate in a glass, how much water should be added?
4) if Simon wishes to make 450 ml of squash, how much concentrate and water should he use?

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

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?

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.