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Vinvika [58]
2 years ago
5

Area of right angle triangle is 54 cm2. if one of its leg is 12 cm fine the perimeter

Mathematics
1 answer:
Molodets [167]2 years ago
8 0
The perimeter of the right angled triangle should be 36cm, hope this helps:)
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The following table shows the number of hours some high school students in two states spend surfing the Internet each week:
babymother [125]
1st data set:

Minimum: 34
1st quartile: 35
Median: 36
3rd quartile: 37
Maximum: 38

Second data set:
Minimum: 20
1st quartile: 23
Median: 25
3rd quartile: 38
Maximum: 65

Graph it based on the values of the 1st and 3rd quartile. If they are both the same number away from the mean then they are symmetrical. Otherwise they are not. In this case, the first one is similar and the second one is not.

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3 years ago
Researchers ask a random sample of 1,001 adults nationwide whether they favor or oppose the legalization of marijuana. Fifty-fiv
natima [27]

Answer:

b. It will decrease by a factor of 2

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The lower end of the interval is given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}}

The upper end of the interval is given by:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}}

The length of the interval is the subtraction of the upper end by the lower end, so it is:

L = 2z\sqrt{\frac{\pi(1-\pi)}{n}}

This means that the length is inverse proportional to the square root of the size of the sample.

So, if the sample size is multiplied by 4, the length of the interval is going to decrease by a factor of 2.

4 0
3 years ago
The solutions to x2-5x-14=0 are what
Anvisha [2.4K]

Answer:

-2

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Do the ratios 16 18 and 1 2 form a proportion?
olga nikolaevna [1]

Answer:

no they don't form a proportion

Step-by-step explanation:

16:18/2:2 = 8:9

8:9 and 1:2 are unequal

5 0
2 years ago
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Which expression is equivalent to 1/4 (2-5x+ 6)?
Flauer [41]

Answer:

Option B, -5/4x + 2

Step-by-step explanation:

<u>Step 1:  Combine like terms inside the parenthesis </u>

1/4(2 - 5x + 6)

1/4(8 - 5x)

(1/4 * 8) + (1/4 * -5x)

2 - 5/4x

Answer:  Option B, -5/4x + 2

3 0
3 years ago
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