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Bumek [7]
3 years ago
13

An urn contains 5 green balls, 7 yellow balls and 8 blue balls. Event A is defined as drawing a green ball on the first draw, an

d event B is defined as drawing a green ball on the second draw. If two balls are drawn from the urn, one after the other and not replaced, what is P(B|A) expressed in simplest form?
A.3/19
B.4/19
C.1/5
D.5/19
Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
3 0
The answer is c. How’s your day going? I hope it’s going good
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14 is the correct answer
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Chloe is 5 feet 4 inches tall. There are 2.54 centimeters in 1 inch. What is Chloe’s height in centimeters
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Step-by-step explanation:

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The function h(t) = -16t2 + 48t + 28 models the height (in feet) of a ball where t is the time (in seconds).
Alex17521 [72]

Answer:

64

Step-by-step explanation:

<em>[using calculus] </em>When the function h(t) reaches its maximum value, its first derivative will be equal to zero (the first derivative represents velocity of the ball, which is instantaneously zero). We have h'(t) = -32t + 48, which equals zero when t = 3/2 = 1.5. The ball therefore reaches its maximum height when t = 1.5. To find the maximum height, we need to find h(1.5), which is 64 feet.

<em>[without calculus] </em>This is a quadratic function, so its maximum value will occur at its vertex. The formula for the x-coordinate of the vertex is -b/2a, so the maximum value occurs when t = -48/(2*16), which is 1.5. The maximum height is h(1.5), which is 64 feet.

5 0
3 years ago
Write an equivalent expression for (x - 11)(x + 9).
vodka [1.7K]

Answer:

x²-2x-99

Step-by-step explanation:

(x-11)(x+9) - foil method

x times x = x squared

x times 9 = 9x

-11 times x = -11x

-11 times 9 = -99

x squared + 9x + 11x + -99

x squared-2x-99

7 0
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PLEASE HELP [[99 POINTS!!!!!!}
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I think the answer is D because its multiplying by 2 each time
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