Evaluate the expression when x = 3 and y=-7. x-8y
1 answer:
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Answer:
Step-by-step explanation:
Well, the center origin of the circle is given (h,k) = (-3,5).
Point on the circle is (x,y) = (1,8)
We have to find our radius as they gave us a point. from origin to the edge of the circle.
Using the formula: (x - h)^2 + (y - k)^2 = r^2
Plug in our (h,k) = (-3,5) and (x,y) = (1,8) to solve for radius.
(x - h)^2 + (y - k)^2 = r^2
(1 - (-3))^2 + (8 - (5))^2 = r^2
(4)^2 + (3)^2 = r^2
16 + 9 = r^2
r^2 = 25
r = 5
Answer:
The probability of drawing either 3 red cards or 3 face cards is 0.1276.
Step-by-step explanation:
Total number of card in standard deck is 52.
Number of red cards is 26.
Face card are king, queen and jack. Total number of face cards are .
Formula of probability is
Total outcomes is
Total possible outcomes of getting 3 red is
Total possible outcomes of getting 3 face is
Total possible outcomes of getting either 3 black or 3 face cards is
probability of drawing either 3 red cards or 3 face cards is
probability of drawing either 3 red cards or 3 face cards is 0.1276.