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3 years ago

What is the experimental probability of a coin toss results in two heads showing?

Mathematics

2 answers:

lorasvet [3.4K]3 years ago

8 0

Answer:

1 in 4 chance

25% chance

Liono4ka [1.6K]3 years ago

6 0

Answer:

25%

(1/4.)

Step-by-step explanation:

So, to get heads twice in a row in two coin tosses it would be 25%. The odds of getting a heads with one coin toss is 50% (1/2.) Every time you do another coin toss the odds are halfed again. So half of 1/2 is 1/4 (think about it as like 50 divided by 2, so 25%.)

Hope this helps and have a nice day! Sorry I'm not great at explaining!

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4 years ago

A middle school has… 220 students in the 6th grade; 170 students in the 7th grade; and 100 students in the 8th The librarian wan

raketka [301]

Answer:

D. 45 sixth graders, 35 seventh graders, 20 eighth graders

Step-by-step explanation:

The question is missing the list of option. The option is:

A. 45 sixth graders, 45 seventh graders, 45 eighth graders

B. 20 sixth graders, 35 seventh graders, 45 eighth graders

C. 20 sixth graders, 20 seventh graders, 20 eighth graders

D. 45 sixth graders, 35 seventh graders, 20 eighth graders

If the librarian wants to survey a group that can represent the true data of the population, choosing the same number for each grade will not represent the population. The number of the sample should be spread similarly to the number of students each grade.

The ratio of students for 6th grade: 7th grade: 8th grade is 220: 170: 100. The 6th grade has highest number of students, followed by 7th grade and then 8th grade the lowest.

The answer that follow 220 : 170 : 100 ratio is option D. The sample size is roughly 20% of the population of each grade

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3 years ago

Convert -450° from degrees to radians

Nikolay [14]

Hello!

To convert degrees to radians, you multiply by $\frac{\pi}{180}$ , as shown below.

450( $\frac{\pi}{180}$ )≈7.85

Therefore, our answer is 7.85 radians.

I hope this helps!

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3 years ago

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