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Aleksandr [31]
3 years ago
13

8 - x = 2x - 1 =

Mathematics
1 answer:
iragen [17]3 years ago
7 0

8-x=2x-1\ \ \ \ |-8\\\\-x=2x-9\ \ \ |-2x\\\\-3x=-9\ \ \ \ |:(-3)\\\\\boxed{x=3}

1) subtract 8 from both sides

2) subtract 2x from both sides

3) divide both sides by (-3)

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Answer:

I think it shifts horizontally by 7 units to the right. Not completely sure though.

Step-by-step explanation:

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The following triangles are similar. Find x.
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Let's use the line on the right side. In the smaller triangle, the length is 4. The same side on the bigger triangle is 12. The ratio of the smaller triangle to the bigger triangle is:

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Which of the following is NOT a formula for determining complementary probability?
forsale [732]

<em>Question:</em>

<em>Which of the following is NOT a formula for determining complementary probability?</em>

<em>A. P(outcome) = 1- P(-outcome)</em>

<em>B. P(outcome) - P(-outcome) = 1</em>

<em>C. P(outcome) + P(-outcome) =1</em>

<em>D. P(-outcome) = 1 - P(outcome)​</em>

<em></em>

Answer:

P(outcome) - P(-outcome) = 1

Step-by-step explanation:

Required

Determine which option is not a formula of complementary probabilities

From the list of given options, the complementary probabilities are P(outcome) and P(-outcome)

In probability;

P(outcome) + P(-outcome) = 1 --- Equation 1

Subtract P(outcome) from both sides

P(outcome) - P(outcome) + P(outcome) = 1 -  P(outcome)

P(-outcome) = 1 - P(outcome)  ------ Equation 2

Subtract P(-outcome) from both sides of equation 1

P(outcome) + P(-outcome) - P(-outcome) = 1 -  P(-outcome)

P(outcome)  = 1 -  P(-outcome)

Equation 1, 2 and 3 represents options A, C and D

While option B is out of place

<em>Hence, option B is not a formula of complementary probability</em>

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3 years ago
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