Seven more than the product of a number and 8 is equal to 6

aivan3 [116]

Lucy can make 5 bows because she only needs 1/6 to make one bow and 1/6x5=5/6 which is how much ribbon she has

5 0

3 years ago

suppose you go to a concert and purchase 3 identical t-shirts and a hat. the hat cost $21 and you spend $60 in all how much does

Marianna [84]

Ok, first you subtract 21 from 60.
That gives you 39, so you then divide that by 3.
That gives you 13, so each t-shirt cost $13.
Hope this helps

3 0

4 years ago

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According to data from the American Medical Association, 10% of us are left handed. If three people are randomly selected, find

satela [25.4K]

Answer:

For each person, there are only two possible outcomes. Either they are left handed, or they are not. The probability of a person being left-handed is independent from other people. So we use the binomial probability distribution to solve this question.

0.1% probability that they are all left-handed.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are left handed, or they are not. The probability of a person being left-handed is independent from other people. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

10% of us are left handed.

This means that $p = 0.1$

If three people are randomly selected, find the probability that they are all left-handed.

This is P(X = 3) when n = 3. So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 3) = C_{3,3}.(0.1)^{3}.(0.9)^{0} = 0.001$

0.1% probability that they are all left-handed.

3 0

3 years ago

two sides of a rectangular fence are 5 5/ 8 feet long. the other two sides are 6 1/4 feet long. what is the perimeter

goldenfox [79]

Because a rectangle has four sides and the opposite sides are the same length, you can simply multiply each of the given sides (5 5/8 feet and 6 1/4 feet) by 2, and then add them together.
5 5/8 × 2 = 11 1/4.
6 1/4 × 2 = 12 1/2
11 1/4 + 12 1/2 = 23 3/4 or 23.75

Therefore, the perimeter of the rectangle is 23.75 feet.

8 0

3 years ago

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Randy has two 28.pound blocks of ice for his snow cone stand. if each snow cone.⅔ requires; Pound to ice, how many snow cones ca

Drupady [299]

Answer:

Randy can make 42 snow cones.

Step-by-step explanation:

28 divided by 2/3 = 42.

4 0

4 years ago

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