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lozanna [386]
3 years ago
10

Determine if events A and B are mutually exclusive.

Mathematics
2 answers:
IrinaK [193]3 years ago
8 0
<h3>Answer:  B) Mutually exclusive</h3>

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

Work Shown:

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

P(A and B) = 1/5 + 7/20 - 11/20

P(A and B) = 4/20 + 7/20 - 11/20

P(A and B) = (4+7-11)/20

P(A and B) = 0/20

P(A and B) = 0

Events A and B are <u>mutually exclusive</u> because the probability of both events happening simultaneously is 0. One event or the other must happen, but both can't happen at the same time.

Here's a visual way to think about it: draw a rectangle, and then split the rectangle into two smaller parts. The two smaller parts don't have to be equal in area, size, or shape. Label the two smaller parts A and B. If you throw a dart at the rectangle, you'll land somewhere in region A, or region B, but not both regions at the same time. This is a demonstration of what it means to be mutually exclusive. Regions A and B do not overlap in any way.

Airida [17]3 years ago
6 0

Answer:This is mutually exclusive

P(A) = 1/5

P(B) = 7/20

The formula is P= P(A)+P(B)

P = 1/5+7/20= 11/20

Step-by-step explanation:

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Step-by-step explanation:

The solution to this problem is a graph.

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Next, graph y < 43x – 2 using a dashed line (due to the < operator):  The slope is 43 and the y-intercept is -2.

Determine where the two lines intersect, either from the graph or algebraically.  If algebraically:

equate the two givens:

y = 12x - 1 = y = 43x – 2, which simplifies first to:

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1 = 43x - 12x = 31x, which results in x = 1/31.

Substituting 1/31 for x in the first equation, we get:

y = 12(1/31) - 1, or y = 12/31 - 1, or y = 12/31 - 31/31, or y = 19/31

The two graphs intersect at (1/31, 19/31)

Shade (darken) the area beneath (under) the dashed line y < 43x – 2.

The solution is the area that you have darkened twice.

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3 years ago
-100,-200,0,-25,30 in order from least to greatest
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4 years ago
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HELP PLEASE! BRAINLIEST
V125BC [204]
Since AED forms a straight line, all involved angles sum to 180°. Therefore AEB + BED = 180. Also, since EC bisects BED, BEC = CED, and BED = 2× CED. Now to substitute the first equation:
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So what is m<AEC?? It is the sum of AEB + BEC, and since BEC = CED we can say that:
AEC = AEB + CED
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3 0
4 years ago
Please help marking brainliest
REY [17]

Answer:

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If your teacher is as annoying as mine round to 43

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