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Vikentia [17]
3 years ago
13

Three cards are taken, one after the other and without replacement, from a standard deck of 52 card. Find the probability that t

he first and third card are red?
Mathematics
1 answer:
satela [25.4K]3 years ago
7 0

Answer:

Since the cards are drawn with replacement, the order isn’t really relevant:

P(heart) = 13 / 52 = 1 / 4

P(red) = 26 / 52 = 1 / 2

P(face) = 12 / 52 = 3 / 13

P(heart and red and face) = 1 / 4 * 1 / 2 * 3 / 13 = 3 / 104

Step-by-step explanation:


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Determine whether the random variable is discrete or continuous. In each​ case, state the possible values of the random variable
Slav-nsk [51]

Answer:

a) Discrete Variable

b) Continuous Variable

Step-by-step explanation:

We are given the following in the question:

Discrete and Continuous:

  • Discrete data are the data whose value can be expressed in whole number. They cannot take all the values within an interval.
  • Discrete variables are usually counted than measured.
  • Continuous variable can be expressed in the form of decimals. They can take any value within an interval.
  • Continuous variables are usually measured than counted.

​(a) The number of free dash throw attempts before the first shot is made. ​

Since the number of shots made will always be expressed in whole numbers and the number of shots made will counted and not measured. Thus, number of free dash throw attempts before the first shot is made. is a discrete variable.

(b) The distance a baseball travels in the air after being hit.

The distance is a continuous variable as its value can be expressed in decimals. Also distance is always measured and not counted. Thus, distance a baseball travels in the air after being hit is a continuous variable.

4 0
3 years ago
PLEASE HELP IMAGE BELOW
gtnhenbr [62]

Answer:

Q1) ans-16%

Q2) ans-50%

Q3) ans- 16%

Q4) yes, I think the question 3 and 1 are same

5 0
2 years ago
Find sin x/2, cos x/2, and tan x/2 from the given information.. cos x = −15/17, 180° < x < 270°. . sin x/2=. . cos x/2=. .
sukhopar [10]
So base on your question the possible answer to that kind of question and the solution are the following and i hope you will understand the formula and free to ask some questions if needed.

<span>2<span>cos2</span><span>x2</span>=1+cosx=1−<span>1517</span>=<span>217</span>,<span>cos2</span><span>x2</span>=<span>117</span></span> <span>cos<span>x2</span>=−<span>1<span>17<span>−−</span>√</span></span>....(1)</span> <span>sin<span>x2</span>=<span>1<span>17<span>−−</span>√</span></span>,90<<span>x2</span><135</span> <span>sin<span>x2</span>>0,cos<span>x2</span><0,tan<span>x2</span><0</span> <span>2<span>sin2</span><span>x2</span>=1−cosx=1−<span><span>−15</span>17</span>=<span>3217</span>,sin<span>x2</span>=<span>4<span>17<span>−−</span>√</span></span>.....(2)</span><span> divide (2) by (1) and get the value of tan x/2</span>
6 0
3 years ago
Read 2 more answers
What are the real or imaginary solutions of the polynomial x^4-3x^2=-2x​
bagirrra123 [75]

Answer:

x = 0 or 1 or -2

Step-by-step explanation:

x^{4} -3x^{2} +2x=0

x(x^3-3x+2)=0

x(x-1)^2 * (x+2)0

so x = 0 or 1 or -2

there is no imaginary solutions

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Vitek1552 [10]

Which of the following (1, 16, 27, 81) is not a square number?

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2 years ago
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