What is the equation of a circle with center (-3,-5) and radius 4? A. (x-3)2 + (7-5)2 = 16
B. (x+3)2 + (y + 5)2 = 16
C. (x-3)2 + (y- 5)2 - 4
D. (x + 3)2 + (y + 5)2 - 4
It's B​

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

Can (2,3 and square root 10) be sides ona right triangle?

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?