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Veronika [31]
3 years ago
14

Which of the following systems of linear equations has no solution?

Mathematics
2 answers:
madreJ [45]3 years ago
5 0
None of them above the last one
marusya05 [52]3 years ago
5 0

Answer:

D. none of the above

Step-by-step explanation:

They all have at least one solution.

I hope this helps :)

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Suppose that P(A)=0.5, P(B)= 0.4 and P(B/A) =0.6. Find each of the following.
Lady_Fox [76]

Part (a)

P(A) = 0.5

P(B) = 0.4

P(B/A) = 0.6

P(A and B) = P(A)*P(B/A)

P(A and B) = 0.5*0.6

P(A and B) = 0.3

<h3>Answer: 0.3</h3>

==========================================

Part (b)

We'll use the result from part (a)

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.5 + 0.4 - 0.3

P(A or B) = 0.6

<h3>Answer: 0.6</h3>

===========================================

Part (c)

A and B are not independent since P(B) does not equal P(B/A). The fact that event A happens changes the probability P(B). Recall that P(B/A) means "probability P(B) based on event A already happened". A and B are independent if P(B) = P(B/A).

Events A and B are not mutually exclusive since P(A or B) is not zero.

<h3>Answer: Neither</h3>
7 0
3 years ago
17 1/4 over 100 as a decimal
Andrew [12]

Answer:

0.1725

Step-by-step explanation:

17 1/4 /100

17.25/100

0.1725

4 0
2 years ago
Read 2 more answers
Given p (a) = 0.45, p (b) = 0.30, p (a ∩<br> b.= 0.05. find p (a|b).
Mice21 [21]
Use the conditional probability formula, P(a|b) = P(a and b)/P(b)
7 0
3 years ago
Can someone help me on this one, ​please? Denis and Dasha solve this problem in two different ways.
bagirrra123 [75]

Answer:

21

Step-by-step explanation:

since its a rectangle there are two lengths of six. If you add them together you get 12. subtract the total perimeter of 54 by the 12 and get 42. Since there is 2 sides left divide by 2. You should get 21 for the width of the rectangle

5 0
3 years ago
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Solve −3x2 − 4x − 4 = 0
kkurt [141]
This is a quadratic formula with a general form of a²x + bx + c = 0. For quadratic equations, we can solve for its two roots using the quadratic formula shown in the attached picture.

a = -3
b = -4
c = -4

x = [-(-4) + √(-4)² - 4(-3)(-4)]/2(-3) = <em>2 + √-32/2</em>
x = [-(-4) - √(-4)² - 4(-3)(-4)]/2(-3) =<em> 2 - √-32/2</em>

4 0
3 years ago
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