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Flauer [41]
3 years ago
5

You draw a card at random from a deck that contains 333 black cards and 777 red cards. What is \text{P(draw a black card})P(draw

a black card)start text, P, left parenthesis, d, r, a, w, space, a, space, b, l, a, c, k, space, c, a, r, d, end text, right parenthesis? If necessary, round your answer to 222 decimal places.
Mathematics
1 answer:
enot [183]3 years ago
6 0

Answer:

The probability of picking a black card at random, from a deck with 3 black cards and 7 red ones is 0.3.

Step-by-step explanation:

We will assume that we have 3 black cards and 7 black cards, for a total of 10 cards. Since we are taking one card at random, we can assume that each card is equally likely to be drawn. We have the following event A: The drawn card is a black. We will find the probability of A as counting the number of outcomes that make A to occur and divide it by the total number of possibilities. We are drawing one card, so we have 10 possibilities to be picked. Out of those 10, only 3 cards are black, hence we have 3 possibilites of picking a black card.

Then,

P(A) = 3/10 = 0.3.

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Answer:

Step-by-step explanation:

Your exponential formula is in the form y = ab^x. In this form, the coefficient 'a' is the initial value, the y-intercept, the value when x=0. The value 'b' is the growth factor, which is 1 more than the growth rate per increment of x. This problem is asking for the growth rate to be expressed as a percentage.

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Given p(x) = 78500(1.02^x), we can compare to the exponential function form to see that ...

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The value of x is zero in the year 2000, so the population that year is ...

  p(0) = a = 78,500

The increase per year is the value of 'b' with 1 subtracted:

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6 0
2 years ago
Jason and Adam are using a kit to build their own electronics board for a computer project. They use a scale drawing included in
jenyasd209 [6]

Answer:

the area is 1800

Step-by-step explanation:

ik this doesn't answer the full question but hope it helps <3

4 0
3 years ago
Read 2 more answers
What number must be added to the expression below to complete the square? x2-5x
kati45 [8]

Answer:

6.25

Step-by-step explanation:

(x-a)^2=x^2-2ax+a^2

2a=5

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2.5 ^ 2 = 6.25

3 0
3 years ago
Find f(-3) for (x) = -2x + 5
valentina_108 [34]

Answer:

11

Step-by-step explanation:

x = -3

Substitute -3 with x

________________________

* = Multiplying

(-2*-3) + 5

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3 0
2 years ago
Ramone pays $6 for lunch and $2 for juice each day.
VMariaS [17]

Answer:

D

Step-by-step explanation:

If you were trying to find the amount of money that he would pay in 20 days, you would need to multiply the lunch and juice money by the amount of days.

6($) x 20(days) = 120

2 ($)x 20(days) = 40

So it would be 120, 40

=Answer choice D.

6 0
3 years ago
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