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dem82 [27]
3 years ago
9

What is x? It is not 180. 18x-7+9x-2=180

Mathematics
1 answer:
alexandr402 [8]3 years ago
8 0

Answer:

x=7

Step-by-step explanation:

Step 1-  simplify both sides of the equation

step 2- add 9 to both sides

step 3- divide both sides by 27

final answer will get you x=7

have good day ((:

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Using a function on her calculator, Jamie can generate a single random digit by pressing the "Enter" key. She wants to experimen
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Answer:

We should expect 25 generated digits in order to get a fifth "4"

Step-by-step explanation:

For each generated digit, there are only two possible outcomes. Either it is a four, or it is not. The probability of a digit being a 4 is independent of other digits. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

The expetcted number of trials to get r sucesses, with p probability, is given by:

E = \frac{r}{p}

Assume that the calculator will generate a "4" on any given attempt with probability 0.20.

This means that p = 0.2

How many total generated digits should we expect in order to get a fifth "4"

This is E when r = 5. So

E = \frac{r}{p} = \frac{5}{0.2} = 25

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3 years ago
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satela [25.4K]

Answer:

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Step-by-step explanation:

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Please help, What is the nth term rule of the quadratic sequence below?<br> -4,1,12,29,52,81,116
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Part A)
From equation (1) the value of y comes out to be:

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Part B)
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Answer: You didn't add like a question or a link sorry..

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