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3 years ago

Find the non permissible replacement for y in this expression. y^2/ -3y+9

Mathematics

1 answer:

Lilit [14]3 years ago

3 0

Answer:

Step-by-step explanation:

You have a fraction, so a non permited value is one which will create a 0 in the denominator.

-3y + 9 = 0

y = 3

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ale4655 [162]

Answer:

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Step-by-step explanation:

The formula for growth is given by

y = ab^x

where a is the initial value and b is the growth rate

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4 years ago

If 10 people apply for 3 jobs in how many ways can people be chosen for the jobs. 1. If the jobs are all the same. 2. If the job

Crank

Answer:

1. 120 ways

2. 720 ways

Step-by-step explanation:

When the order is important, we have a permutation.

When the order is not important, we have a combination.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

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

Combinations formula:

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

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

1. If the jobs are all the same.

Same jobs means that the order is not important. So

3 from a set of 10.

$C_{10,3} = \frac{10!}{3!(10-3)!} = 120$

120 ways

2. If the jobs are all different.

DIfferent jobs means that the order matters.

$P_{(10,3)} = \frac{10!}{(10-3)!} = 720$

720 ways

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3 years ago

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Answer:

Step-by-step explanation:

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