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- anonymous

I hav a few math questions I need help with anybody wanna help me out?

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- anonymous

I hav a few math questions I need help with anybody wanna help me out?

- schrodinger

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- anonymous

I only have 3 and that's it

- anonymous

Post them xD

- anonymous

A juice company decides to test five diffferent brands of juice. The different brands have been labeled A B C D E . The company decides to compare each brand with the other brands by pairing together different brands. How many different pairs will result by selecting two different brands at a time .?
11
15
120
10

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- anonymous

you would want to find the number of combinations of 5 things taken 2 at a time
5C2 = 5!/[2!3!] = 5 * 4 * 3 * 2 * 1/(2 * 1 * 3 * 2 * 1) = (5 * 4)/2 = 5 * 2 = ???

- anonymous

So 10?

- Black_ninja123

Yes

- anonymous

Correct

- anonymous

At West Middle school, 30% of students have a dog, 20% of students have a cat, 10% of students have another kind of pet, 40% of students have no pets.
a. Explain how you can use a random-number table to find the expeiramental probability that in a group of 5 students, at least 2 have dogs
b. Use your model from part a and the table below to find the experimental probability that in a group of 5 students at least 2 will have a dog

- anonymous

how did i get here

- anonymous

Because you wanted to help me out

- anonymous

hmm

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