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3 years ago

PLEASE HELP ATTACHED BELOW

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

4 0

Answer:

$Area~of~quarter:-$

$=\frac{\pi *8*8}{4}$

$=16\pi$

<h3><u>--------------------</u></h3><h3><u>hope it helps...</u></h3><h3><u>have a great day!!</u></h3>

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Error Analysis A problem on a test says that 70% of people enjoy the beach. The students are

Otrada [13]

Answer:

Probability that exactly one person says he or she enjoys the beach = 80%

Check Explanation for how to get this and which error the studemt that made the 100% claim must have made.

Step-by-step explanation:

The simulation presented is that for a series of two people sample.

Numbers 0 to 6 represents that the beach-goer enjoys going to the beach and numbers 7 to 9 represents that the beach-goer doesn't enjoy going to the beach.

So, the simulation is then obtained to be

(5,8) (2,7) (0,9) (0,2) (9,0) (1,9) (4,7) (0,3) (6,7) (7,5)

Using the simulation, estimate the probability that exactly one person says he or she enjoys the beach

From the simulation, the ones with exactly one of the two numbers ranging from 0 to 6 to indicate enjoying going to the beach include

(5,8) (2,7) (0,9) (9,0) (1,9) (4,7) (6,7) (7,5)

The probability of an event is defined and expressed as the number of elements in that event divided by the total number of elements in the sample space.

Probabilty that exactly one person says he or she enjoys the beach = (8/10) = 0.80 = 80%

The student claims that this probability is 100%, but the other two simulations that did not satisfy the condition of exactly one person saying that he or she enjoys the beach include

(0,2) and (0,3), which show that in the two cases, the two participants both expressed enjoying going to the beach.

The student's error must have been in counting these two simulations as part of 'exactly one person saying he or she enjoys the beach' which is indeed an error.

Hope this Helps!!!

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3 years ago

a cookie recipe needs 1 1/3 cups of flour to make 1/2 batch of cookies. How much flour is needed to make 1 batch of cookies?

Irina-Kira [14]

2 2/3cups of flour for a full batch of cookies

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4 years ago

Read 2 more answers

Line l contains points(-2,1) and(4,1) point p has coordinates (5,7)

amm1812

Line l:
1 = - 2 m + b / + ( - 1 )
1 = 4 m + b
----------------------
- 1 = 2 m - b
+
1 = 4 m + b
--------------------
0 = 6 m; m = 0
1 = 0 + b, b = 1
Line l:
y = 1
The distance from point P to line l:
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3 years ago

How would you write the following expression as a single term? 3[2 ln(x-1) - lnx] + ln (x+1)

Elan Coil [88]

Apply the rule: $n ln x = ln x^{n}$

$3[2 ln(x-1) - lnx] + ln(x+1)=3[ln(x-1)^{2} - lnx ] + ln(x+1)$

Apply the rule : $log a - log b = log \frac{a}{b}$

$3[2 ln(x-1) - lnx] + ln(x+1)=3ln\frac{(x-1)^{2} }{x} + ln(x+1)$

Apply the rule: $n ln x = ln x^{n}$

$3[ln (x-1)^{2} -ln x]+ln (x+1)= ln \frac{(x-1)^{6} }{x^{3} } +log(x+1)$

Finally, apply the rule: log a + log b = log ab

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4 years ago

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

agasfer [191]

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

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

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

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3 years ago