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luda_lava [24]
3 years ago
13

How do you add fractions with unlike denominators?

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
6 0
Find the common denominator find the closest common factor between the two denominators
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Randomly selected students participated in an experiment to test their ability to determine when one minute​ (or sixty​ seconds)
zalisa [80]

Answer: (57.41,\ 62.19)

Step-by-step explanation:

Given : Sample size : n=40

Sample mean : \overline{x}=59.8\text{ seconds}

Standard deviation : \sigma =9.2\text{ seconds}

Significance level : \alpha=1-0.9=0.1

Critical value : z_{\alpha/2}=1.645

Formula to find the confidence interval for population mean :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=59.8\pm(1.645)\dfrac{9.2}{\sqrt{40}}\\\\\approx59.8\pm2.39\\\\=(59.8-2.39,\ 59.8+2.39)\\\\=(57.41,\ 62.19)

Hence, a 90​% confidence interval estimate of the population mean of all students = (57.41,\ 62.19)

6 0
3 years ago
What are 2 tv shows i can watch on hbo max for a 12 yr old #verymature​
hammer [34]

Answer:

7.1/10. 81/100. Pitch Perfect (2012)

6.9/10. 78/100. Clueless (1995)

7.2/10. 64/100. We Are Who We Are (2020)

7.0/10. 76/100. Bill & Ted's Excellent Adventure (1989)

8.4/10. 80/100. Euphoria (2019)

5.9/10. 71/100. She's All That (1999)

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
A mountain climber ascends 800 feet per hour from his original
navik [9.2K]

Answer:

4,800

Step-by-step explanation:

Just multiply 800 x 6, which gets 6,800. Then, get 11,600 and subtract 6,800 from it. You'll get 4,800.

7 0
3 years ago
What is the circumference of a circle if its diameter is 5 feet? <br> Use 3.14 for Pi.
Elis [28]
Circumference= 15.71 feet squared
4 0
3 years ago
IXL geometry please help!
Sedaia [141]
<h3>Answer: 32 degrees</h3>

================================

Work Shown:

Inscribed angle theorem

arc measure = 2*(inscribed angle)

arc ABC = 2*(angle D)

arc ABC = 2*(35)

arc ABC = 70 degrees

-------------

break arc ABC into its smaller pieces

(minor arc AB)+(minor arc BC) = arc ABC

(38)+(minor arc BC) = 70

minor arc BC = 70-38

minor arc BC = 32

8 0
3 years ago
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