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storchak [24]
3 years ago
12

Use the rules of negative numbers to calculate

Mathematics
1 answer:
dezoksy [38]3 years ago
6 0
Are there answer options??


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Suppose that P (A)=0.4 AND P (B)=0.2, If events A & B ARE Mutually EXCLUSIVE :
baherus [9]

Part (a) Finding the probability of either A or B

We are told that events A and B are mutually exclusive. This means they cannot happen at the same time. We can say P(A and B) = 0

Furthermore,

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

P(A or B) = 0.4 + 0.2 - 0

P(A or B) = 0.6

<h3>Answer:  0.6</h3>

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

Part (b) Finding the probability of neither A nor B

P(A or B) + P(neither A nor B) = 1

P(neither A nor B) = 1 - P(A or B)

P(neither A nor B) = 1 - 0.6

P(neither A nor B) = 0.4

The reason why this works is to imagine throwing a dart at the Venn diagram. You'll either...

  • you land in A or B (pick one but not both), OR,
  • you'll land outside both regions A and B.

One or the other must happen. Both events cannot happen simultaneously.

<h3>Answer: 0.4</h3>
7 0
3 years ago
HELP PLZZZ HURRY !!! Which word is an antonym of the underlined word in the paragraph?
PtichkaEL [24]

D

Step-by-step explanation:

I'm guessing the underlined word is hail, if it's not then let me know.

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4 years ago
ASAP PLEASE!!!!<br><br> What is an equation for the line with slope<br> 2/3 and y-intercept 9?
Ainat [17]
Y=2/3x+9 the answer is C
7 0
3 years ago
Read 2 more answers
I need help with this question!
alekssr [168]

Answer:

a) 2(x+12) and 2 times X+ 2 times 6

b) 12y+8

Step-by-step explanation:

for (A) the equation that i choose are the distributed from of the equation

for (B) I combined like terms and they only equation that made sense is this one

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4 years ago
Consider a sequence given by the formula f(n) = 1 / 3 ^ n−1 starting with n = 1. Generate the first 5 terms of the
denpristay [2]

Answer:

Step-by-step explanation:

According to the formula we need to start from n = 1. So the first 5 terms of the sequence, will have the following values of n: 1,2,3,4,5

Now, we need to replace the values of n into the formula to get all the terms.

f(1) = 1/3 ^ 1-1 = 1/3^0 = 1.

This is because any number elevated to zero is always the unit, in this case, 1.

f(2) = 1/3 ^2-1 = 1/3 ^1 = 1/3

This, because any number elevated to 1, is always the same initial number.

f(3) = 1/3 ^3-1 = 1/3 ^2 = 1/9.

Because when the exponent is elevating a fraction number, the power goes to both numbers (numerator and denominator)

f(4) = 1/3 ^4-1 = 1/3 ^3 = 1/27.

f(5) = 1/3 ^5-1 = 1/3 ^4 = 1/81.

5 0
4 years ago
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