Random Math 1
Give the center and radius:
x2 - 6x + y2 + 8y + 5 = 0
Give the center and radius:
x2 - 6x + y2 + 8y + 5 = 0
(x - 3)2 + (y + 4)2 = 20
center: (3, -4) radius: 2sqrt(5)
4Pi/3 = ________ degrees
4Pi/3 = ________ degrees
4Pi/3 * 180/Pi = 240 degrees
Hangman: color
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INDIGO
If all 9 students are in class, how many different ways can they be lined up?
If all 9 students are in class, how many different ways can they be lined up?
9! = 362,880
P(x, y) is a point on the unit circle in Quadrant IV.
x = 4/5. what is y?
P(x, y) is a point on the unit circle in Quadrant IV.
x = 4/5. what is y?
(4/5)2 + y2 = 1
y2 = 1 - (4/5)2 = 9/25
y = sqrt(9/25) = +/- 3/5 --> -3/5 (Quadrant 4)
Hangman: math name
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SIR THOMAS BAYES
cot(7pi/4) =
cot(7pi/4) = -1
csc(pi/3) =
csc(pi/3) = 2sqrt(3)/3
Who is the only active NBA player with more assists than LeBron James?
Chris Paul
A test for a disease gives a correct positive result with a probability of 0.95 when the disease is present, but gives an incorrect positive result (false positive) with a probability of 0.15 when the disease is not present. If 5% of the population has the disease and Jean tests positive, what is the probability she really has the disease?
A test for a disease gives a correct positive result with a probability of 0.95 when the disease is present, but gives an incorrect positive result (false positive) with a probability of 0.15 when the disease is not present. If 5% of the population has the disease and Jean tests positive, what is the probability she really has the disease?
(0.05)(0.95) / ((0.05)(0.95)+(0.95)(0.15)) = 0.25
Wire manufactured by a company is tested for strength.
The test gives a correct positive result with a probability of 0.85 when the wire is strong, but gives an incorrect positive result (false positive) with a probability of 0.04 when in fact the wire is not strong.
If 98% of the wires are strong, and a wire chosen at random fails the test, what is the probability it really is not strong enough?
Wire manufactured by a company is tested for strength.
The test gives a correct positive result with a probability of 0.85 when the wire is strong, but gives an incorrect positive result (false positive) with a probability of 0.04 when in fact the wire is not strong.
If 98% of the wires are strong, and a wire chosen at random fails the test, what is the probability it really is not strong enough?
(0.02)(0.96)/((0.98)(0.15)+(0.02)(0.96)) = 0.1155 = ~0.12
Right now the NBA has one Canadian team, the Toronto Raptors. What other team used to be located in Canada, and in which city?
Vancouver Grizzlies