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3 years ago

Rule for adding integers with different signs

Mathematics

2 answers:

lawyer [7]3 years ago

7 0

If u add 2 negatives you will get a positive

dsp733 years ago

3 0

Answer:

Step-by-step explanation:

If the signs are the same, add the numbers then use the sign of the bigger number.

Example: -25-15=-45

If the signs are different, subtract the smaller number from the larger number, then use the sign of the larger number

Example: -25+15=-10

Hope this helps :)

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In how many ways can a quality-control engineer select a sample of3 transistors for testing frm a batch of 100 transistors?

Advocard [28]

Answer:

161700 ways.

Step-by-step explanation:

The order in which the transistors are chosen is not important. This means that we use the combinations formula to solve this question.

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.

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

In this question:

3 transistors from a set of 100. So

$C_{100,3} = \frac{100!}{3!(100-3)!} = 161700$

So 161700 ways.

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3 years ago

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weeeeeb [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Nana76 [90]

Answer:

wouldn't this be 18.052

Step-by-step explanation:

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3 years ago

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Naily [24]

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4 years ago

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Lelechka [254]

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