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LenKa [72]
3 years ago
8

Calculate the probability of flipping a coin 20 times and getting 4 heads. Round your answer to the nearest ten thousandth.

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
5 0

Answer:

0.0046

Step-by-step explanation:

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The diameter of a cookie is 2 inches. If π = 3.14, what is the area of the cookie, rounded to the nearest tenth?
insens350 [35]

Answer:

3.1 inches

Step-by-step explanation:

Area of the cookie =Pi r^2

Pi = 3.14

Diameter = 2inches

Radius r = diameter/2 = 2/2

= 1

Therefore

Area = 3.14 x 1^2

= 3.14 x 1 x 1

= 3.1 inches

3 0
3 years ago
Confidence Interval Application Many people feel that the drying of pavement marking paint is much too slow. You spend several d
djyliett [7]

Answer:

The sample size is  n =33

Step-by-step explanation:

From the question we are told that

  The margin of error is E  =  1.5 seconds

   The standard deviation is  s =  4 seconds

 Given that the confidence level is 97% then the level of significance is mathematically represented as

      \alpha =( 100 -97)\%

=>   \alpha  =  0.03

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  2.17

Generally the sample size is mathematically represented as

    n  =[  \frac{Z_{\frac{\sigma }{2 } } *  \sigma }{E} ]^2

=> n  =[  \frac{2.17  * 4 }{1.5} ]^2

=>  n =33

7 0
3 years ago
Five times a number is greater thn 25
Kobotan [32]

5 x 6 is greater than 25.


( Hope this helps!! ) <3


5 0
3 years ago
Read 2 more answers
Translate the phrase into an algebraic expression, the product of 8 and y?
SVETLANKA909090 [29]

Answer:

8y

Step-by-step explanation:

Product means multiply

8*y

8y

4 0
2 years ago
Simplify 3 radical 5 over 4 radical 5
matrenka [14]
3√5 / 4√5                The √5's cancel out

The answer is 3/4
This is because √5 is in both the denominator and the numerator, and so you can pull them both out.
8 0
3 years ago
Read 2 more answers
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