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AleksAgata [21]
3 years ago
6

Suppose A and B are independent events. If P(A)=0.2 and P(B)=0.6, what is P(A^B)?

Mathematics
2 answers:
Ainat [17]3 years ago
5 0

Answer: P(A\cap B)=0.12

Step-by-step explanation:

We know that if two events M and N are independent, then the probability of the intersection of the two events is given by :-

P(M\cap N)=P(M)\times P(N)

Given: The events A and B are independent .

Therefore, P(A\cap B)=P(A)\times P(B)

If P(A)=0.2 and P(B)=0.6

Then,

P(A\cap B)=0.2\times 0.6\\\\\Rightarrow P(A\cap B)=0.12

lawyer [7]3 years ago
3 0
OK so you want the probabilty of A and B occurring.  Independet event probabilities are multiplied so its 0.2 * 0.6 = 0.12

b
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The diameter of the base of the cone measures 8 units.
kati45 [8]

Answer:   32\pi cubic units.

Step-by-step explanation:

You can use this formula for calculate the volume of a cone:

V_{cone}=\frac{1}{3}\pi r^2h

Where "r" is the radius and "h" is the height.

You know that the diameter of the base of the cone measures 8 units, then, the radius can be found by dividing the diameter by 2:

r=\frac{8units}{2}\\\\r=4units

Since you already know that height and  the radius, you can substitute them into the formula. Then, the volume of this cone is:

V_{cone}=\frac{1}{3}\pi (4units)^2(6units)

V_{cone}=32\pi \ units^3

8 0
3 years ago
What are the approximate values of the minimum and maximum points of f(x) = x5 − 10x3 + 9x on [-3,3]?
nika2105 [10]

Answer:

Minimum : -37 at x=2.4 and

Maximum = 37 at x=-2.4.

Step-by-step explanation:

Given:

f(x)=x^5-10x^3+9x; [-3,3]

Explanation:

In order to find minimum/maximum of a function, we need to find the first derivative of the function and then set it equal to 0 to get critical points.

Therefore,

f'(x)=5x^4-30x^2+9

Setting derivative equal to 0, we get

5x^4-30x^2+9=0

On applying quadratic formula, we get

x=2.4, -2.4, -0.7, 0.7.

So, those are critical points of the given function.

Plugging the values x=2.4, -2.4, -0.7, 0.7, -3 and 3 in above function, we get

f(2.4)=(2.4)^5-10(2.4)^3+9(2.4)= -37.01376   : Minimum.

f(-2.4)=(-2.4)^5-10(-2.4)^3+9(-2.4)= 37.01376 : Maximum.

f(0.7)=(0.7)^5-10(0.7)^3+9(0.7) = 3.03807

f(-0.7)=(-0.7)^5-10(-0.7)^3+9(-0.7) = -3.03807

f(-3)=(-3)^5-10(-3)^3+9(-3) =0

f(3)=(3)^5-10(3)^3+9(3) =0

Therefore the approximate values of the minimum and maximum points of f(x) = x^5- 10x^3+ 9x on [-3,3] are:

Minimum : -37 at x=2.4 and

Maximum = 37 at x=-2.4.


7 0
3 years ago
A grocer sells 50 loaves of bread a day. The cost is $0.75 a loaf. The grocer estimates that for each $0.05 price increase, 2 fe
jarptica [38.1K]

Answer:

http://www.beaconlearningcenter.com/documents/1509_01.pdf

Step-by-step explanation:

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3 years ago
What is 34 and -7 as a fraction
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34 as a fraction is 17/50

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6 0
3 years ago
Read 2 more answers
Which of the following represents a closer relationship between two variables?a) r =.00.b) r = .50.c) r = -30. d) r = -65.
Zanzabum

Answer:

d) r = -65.

Step-by-step explanation:

The absolute value of r represents the relationship strength and the sign represents the relationship direction

Also if the relationship is nearest to 1 then it would be termed as positive correlated and if the relationship is nearest to -1 then it would be termed as negative correlated

Therefore based on the given options, the last option is correct

7 0
4 years ago
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