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zysi [14]
1 year ago
13

Please help!! due in 2 hours!!

Mathematics
1 answer:
kenny6666 [7]1 year ago
7 0

Answer:

i think 80 copies

Step-by-step explanation:

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Can someone help me please!!!!!!!
Nataly [62]
The anwser is B.Hope this helps! Make sure to give a 5 star rating and a big old THANKS!
3 0
3 years ago
What is the value of the expression 86.24-79764
Fiesta28 [93]

Answer:

-79677.76

Step-by-step explanation:

Subtract the 79764 by using a calculator from the 86.24 and you should get a negative.

6 0
3 years ago
Read 2 more answers
What is the least common multiple of 26 and 39?
GuDViN [60]

Answer:

78

Step-by-step explanation:

Find the prime factorizations of the two numbers:

26 = 2 * 13

39 = 3 * 13

The LCM is the product of common and not common factors with the higher exponent.

LCM = 2 * 3 * 13 = 78

Answer: 78

5 0
3 years ago
You recently sent out a survey to determine if the percentage of adults who use social media has changed from 66%, which was the
il63 [147K]

Answer:

The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).

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 level of 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}.

Of the 2809 people who responded to survey, 1634 stated that they currently use social media.

This means that n = 2809, \pi = \frac{1634}{2809} = 0.5817

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5817 - 2.327\sqrt{\frac{0.5817*4183}{2809}} = 0.56

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5817 + 2.327\sqrt{\frac{0.5817*4183}{2809}} = 0.6034

The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).

6 0
2 years ago
Which relationships are likely to have a positive association? .
uysha [10]

Answer:

A, C

Step-by-step explanation:

A. the distance traveled on a trip and the travel time  YES

B. the distance remaining on a trip and the travel time  NO

C. the amount of money spent and the the number of shirts bought  YES

D. the height of an eighth-grade student and the time to complete a puzzle  NO

E. the amount of money owed on a computer and the time making payments  NO (the amount of money owed drops with each payment made)

7 0
2 years ago
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