Leslie bought 5 magazines to read on her vacation. She bought 2 fashion magazines and 3 entertainment magazines. If Leslie forgot one on the plane, what is the probability the magazine she forgot was a fashion magazine?
There are a total of 5 magazines, and 2 of them are fashion magazines.
The probability of Leslie forgetting a fashion magazine is equal to the number of fashion magazines divided by the total number of magazines:
P(forgetting a fashion magazine) = 2 / 5
Therefore, the probability that the magazine Leslie forgot was a fashion magazine is 2/5 or 0.4.
Sandi made cookies for the teachers at her daughter's school. She made 20 sugar cookies and 18 chocolate cookies and put them in a box for the teacher's lounge. If one cookie broke, what is the probability it was a chocolate cookie?
There are a total of 38 cookies in the box and 18 of them are chocolate cookies.
The probability of the broken cookie being chocolate is equal to the number of chocolate cookies divided by the total number of cookies:
P(broken cookie is chocolate) = 18 / 38
Therefore, the probability that the broken cookie was a chocolate cookie is 18/38 or approximately 0.474 or 47.4%.
could you please double check thats not an answer on there?
You are correct. I apologize for my mistake.
The correct answer is:
There are a total of 38 cookies in the box and 18 of them are chocolate cookies.
The probability of the broken cookie being chocolate is equal to the number of chocolate cookies divided by the total number of cookies:
P(broken cookie is chocolate) = 18 / 38
Therefore, the probability that the broken cookie was a chocolate cookie is 18/38 or approximately 0.474 or 47.4%.
the answer is 9/19
I apologize for my mistake earlier.
The correct answer is:
There are a total of 38 cookies in the box and 18 of them are chocolate cookies.
The probability of the broken cookie being chocolate is equal to the number of chocolate cookies divided by the total number of cookies:
P(broken cookie is chocolate) = 18 / 38
Simplifying this fraction by dividing both the numerator and the denominator by 2, we get:
P(broken cookie is chocolate) = 9 / 19
Therefore, the probability that the broken cookie was a chocolate cookie is 9/19.
In her hall closet, Maria has a shelf that contains nothing but washcloths. This shelf contains 3 white washcloths and twice as many green washcloths as white washcloths. In addition, it also contains twice as many red washcloths as green washcloths.
If Maria closes her eyes and picks out a washcloth at random from the shelf, what is the probability that she picks a green washcloth?
Maria has twice as many green washcloths as white washcloths, so she has 2 x 3 = 6 green washcloths on the shelf.
In addition, Maria has twice as many red washcloths as green washcloths, so she has 2 x 6 = 12 red washcloths on the shelf.
The total number of washcloths on the shelf is 3 + 6 + 12 = 21.
Therefore, the probability of Maria picking a green washcloth at random is:
P(green washcloth) = number of green washcloths / total number of washcloths
P(green washcloth) = 6 / 21
P(green washcloth) = 2/7
So the probability of Maria picking a green washcloth at random from the shelf is 2/7 or approximately 0.286.
Douglas wrapped the pots for flowers in colored foil. He wrapped 6 lily pots, 6 daffodil pots, and 5 hydrangea pots. If Douglas only wrapped one pot in green foil, what is the probability he wrapped the pot of a lily in green foil?
There are a total of 17 pots that Douglas wrapped. The probability of the green foil pot being a lily pot is:
P(lily pot | green foil) = P(green foil and lily pot) / P(green foil)
We know that there is only one pot wrapped in green foil, so:
P(green foil) = 1 / 17
We also know that there are 6 lily pots, so:
P(lily pot) = 6 / 17
Out of the 6 lily pots, we are looking for the probability that the one wrapped in green foil:
P(green foil and lily pot) = 1 / 17 (since there is only one green foil pot)
Now we can calculate:
P(lily pot | green foil) = (1/17) / (1/6)
P(lily pot | green foil) = (1/17) * (6/1)
P(lily pot | green foil) = 6/17
Therefore, the probability that the pot wrapped in green foil is a lily pot is 6/17, or approximately 0.353.
Ella drew 40 different pictures for an art show. Twelve of them include a dog in the picture. If she shuffles the pictures and picks one at random to give to her friend, what is the probability that she will pick one that includes a dog?
There are 12 pictures that include a dog out of a total of 40 pictures.
Therefore, the probability of Ella picking a picture that includes a dog is:
P(picture with dog) = number of pictures with dogs / total number of pictures
P(picture with dog) = 12 / 40
Simplifying the fraction by dividing both the numerator and denominator by 4, we get:
P(picture with dog) = 3 / 10
Therefore, the probability of Ella picking a picture that includes a dog is 3/10 or 0.3.