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kari74 [83]
2 years ago
8

Dion flips a coin 20 times and records if it comes up heads. If getting heads is a success, what is the probability of a success

on each roll?.
0.2.
0.3.
0.5.
1.00
Mathematics
2 answers:
Leviafan [203]2 years ago
8 0
If the coin is fair, the probability of a success on each roll is 0.5.
ra1l [238]2 years ago
5 0

Answer:

0.5.

Step-by-step explanation:

A probability is the division of the number of desired outcomes by the number of total outcomes.

In this problem:

A coin can be either heads or tails, so there are two possible outcomes.

The desired outcomes is heads, so there is one desired outcomes.

So the probability of a success on each roll is 1/2 = 0.5

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Gnesinka [82]

Answer:

140

Step-by-step explanation:

8 per day

17 days

8*17 = 136 soccer matches in the tournament

136 rounded to the nearest 10 =  140

7 0
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A STORE IS GIVING AWAY A $10 COUPON TO EVERY 7TH PERSON TO ENTER THE STORE AND A $25 COUPLON TO EVERY 18TH PERSON TO ENTER THE S
ankoles [38]
<span>The lowest common factor of 7 and 18 is 126 (this is a number that both 7 and 18 multiply into, in fact by each other). This means the 126th person will be the first to get both coupons.</span>
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2 years ago
The New Mexico Division of Fish and Wildlife keeps track of the silvery minnow population in the Rio Grande River. They tagged 5
sattari [20]

Answer:

279 silvery minnow

Step-by-step explanation:

Number of Silvery Minnows initially tagged = 54

Number of minnows captured = 62

Number of tagged minnows in captured ones = 12

Remember that in the very beginning there were no tagged minnows. 54 minnows were captured, tagged and released. This means, there are total 54 tagged minnows in the entire population. Lets say there are x number of minnows in total.

So, in x minnows, 54 are tagged ones.

When 62 minnows are captured, only 12 are tagged ones and remaining are un-tagged. Since, the minnows were randomly captured, we can develop a proportion from this case to estimate the total population of minnows in the Rio Grande River.

Ratio of tagged minnows to total population must be equal to the ratio of captured tagged minnows in total captured minnows.

i.e.

54 : x = 12 : 62\\\\ \frac{54}{x} = \frac{12}{62}\\\\ 62(54)=12x\\ \\ x = 279

This means, there were 279 silvery minnows in the Rio Grande River.

3 0
2 years ago
Which function has the domain x&gt;or= -11
iogann1982 [59]
I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:
y = \sqrt{x + 11}
Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.
6 0
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Which equation could be used to calculate the sum of the geometric series?
Iteru [2.4K]

Answer:

A

Step-by-step explanation:

edge 2020

7 0
2 years ago
Read 2 more answers
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