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3 years ago

Solve the equation, justify each step with an algebraic property 50 + 3x = 7x- 2

Mathematics

2 answers:

Radda [10]3 years ago

3 0

Answer:

Step-by-step explanation:

Step 1:

50 + 3x = 7x - 2 Equation

Step 2:

50 = 4x - 2 Subtract 3x on both sides

Step 3:

52 = 4x Add 2 on both sides

Step 4:

x = 52 ÷ 4 Divide

Answer:

x = 13

Hope This Helps :)

den301095 [7]3 years ago

3 0

13
Add 2 to 50
Add 7x to 3x

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Answer:

Therefore, the probability that at least half of them need to wait more than 10 minutes is 0.0031.

Step-by-step explanation:

The formula for the probability of an exponential distribution is:

P(x < b) = 1 - e^(b/3)

Using the complement rule, we can determine the probability of a customer having to wait more than 10 minutes, by:

p = P(x > 10)

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= 1 - (1 - e^(-10/10) )

= e⁻¹

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The z-score is the difference in sample size and the population mean, divided by the standard deviation:

z = (p' - p) / √[p(1 - p) / n]

= (0.5 - 0.3679) / √[0.3679(1 - 0.3679) / 100)]

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Therefore, the probability that at least half of them need to wait more than 10 minutes is 0.0031.

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3 years ago

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We transform

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The general transformation is

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