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kow [346]
3 years ago
13

Bryanna performed an experiment in which she flipped a coin and recorded the results. She got heads up 23 times and tails up 27

times.
Mathematics
1 answer:
AlexFokin [52]3 years ago
7 0

Answer:

if you are asking the probability of heads vs tails, then its a 50/50 most of the time, just in this situation, there was 1% more chance to get tails.

Step-by-step explanation:

still 50/50, because .01 is a very small number.

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3 years ago
Read 2 more answers
The half-life of Radium-226 is 1590 years. If a sample contains 400 mg, how many mg will remain after 2000 years?
Assoli18 [71]

Answer:

167.27 mg.

Step-by-step explanation:

We have been given that the half-life of Radium-226 is 1590 years and a sample contains 400 mg.

We will use half life formula to solve our given problem.

N(t)=N_0*(\frac{1}{2})^{\frac{t}{t/2}, where N(t)= Final amount after t years, N_0= Original amount, t/2= half life in years.

Now let us substitute our given values in half-life formula.

N(2000)=400*(\frac{1}{2})^{\frac{2000}{1590}

N(2000)=400*(0.5)^{1.2578616352201258}    

N(2000)=400*0.4181633028874878239

N(2000)=167.26532115499512956\approx 167.27

Therefore, the remaining amount of Radium-226 after 2000 years will be 167.27 mg.

3 0
3 years ago
A rectangular room measures 224 square feet. One side of the room is 14 feet long. What is the perimeter of the room?
rusak2 [61]

Answer: The perimeter is 60 feet

Step-by-step explanation:

224/14=16

16+14+16+14=60 feet

The perimeter is 60 feet

3 0
3 years ago
answer #14 for me plss and thank you!!!!​ pls do not answer if you don't know the answer just comment
olga_2 [115]

Answer:

2, 3

Step-by-step explanation:

The graph of quantities in direct proportion.

Is a straight line passing through the origin, thus

the line always crosses the y- axis at |(0, 0 )

Thus the y- intercept is 0

3 0
3 years ago
A recipe for apple pie calls for 1/3 cup of sugar. The recipe makes 8 servings. How many cups of sugar are needed to make 20 ser
postnew [5]
3X8=24

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4 years ago
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