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Alenkinab [10]
3 years ago
12

Sam flipped a coin 20 times and the results are in the frequency table. What is the experimental probability of landing on Heads

? Frequency Outcomes Heads Tails 13 7 Total 20 a 7/40 b 13/40 с 7/20 d 13/20​
Mathematics
1 answer:
Rainbow [258]3 years ago
4 0

Answer: 13/20

Step-by-step explanation:

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What is the period of the sinusoidal fynction below?<br> f(x) = 2 cos(3x – 360) + 3
dexar [7]

Answer:

Here you go! I have a graph for your answer!

Step-by-step explanation:

The Xmin is -10

The Xmax is 10

The Ymin is -10

Ans the Ymax is 10

4 0
3 years ago
Show how the perfect numbers 6 and 28 were generated. Show the aliquot parts of 6 and 28
Mashutka [201]

Step-by-step explanation:

Perfect number is the positive integer which is equal to sum of proper divisors of the number.

Aliquot part is also called as proper divisor which means any divisor of the number which isn't equal to number itself.

<u>Number : 6 </u>

Perfect divisors / Aliquot part = 1, 2, 3

Sum of the divisors = 1 + 2 + 3 = 6

Thus, 6 is a perfect number.

<u>Number : 28</u>

Perfect divisors / Aliquot part = 1, 2, 4, 7, 14

Sum of the divisors = 1 + 2 + 4 + 7 + 14 = 28

Thus, 28 is a perfect number.

3 0
3 years ago
A 90% confidence interval for the average weight (in pounds) of Americans was found to be (185, 210). The point estimate for thi
Lynna [10]

Answer:

B. 12.5

Step-by-step explanation:

We have the lowe confidence interval = 185

The upper confidence interval = 210

Mean of X = (lower confidence + upper confidence interval)/2

Mean of X = 185 + 210/2

= 197.5

The margin of error = the upper confidence interval - mean of X

= 210-197.5

= 12.5

3 0
3 years ago
Which expression is equivalent to 14x – 21?
Vlad1618 [11]
The common factor is 7 so its

7(2x - 3)

8 0
3 years ago
Anthony's weight is nine pounds more than twice his brothers weight. Anthony's weighs 59 pounds. how much does his brother weigh
ahrayia [7]
A = Anthony's weight
B = Anthony's brother's weight

  A = 2B + 9   Plug in Anthony's weight
59 = 2B + 9   Subtract 9 from both sides
50 = 2B   DIvide both sides by B
25 = B   Switch the sides to make it easier to read
  B = 25

Anthony's brother weighs 25 pounds. 

8 0
3 years ago
Read 2 more answers
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