What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?

units

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Indicate the formula for the following conditions: p^c(n,r)=

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.