PLEASE HELP ASAP…. THIS TEST IS MOST OF MY GRADE

Mathematics

2 answers:

Lemur [1.5K]2 years ago

7 0

Answer:

The answer is D

Step-by-step explanation:

This is so because the opposite of a positive number is that number but negative. Hope this helps!

vlabodo [156]2 years ago

3 0

Answer:

its -6.8

Step-by-step explanation: what you are doing is just trying to find the reporcoral of the number so whats the reporcoral of 6.8 negative 6.8

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nydimaria [60]

Answer:

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Step-by-step explanation:

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2 years ago

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Dmitry [639]

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3 years ago

How many ways are there to select a 5-card hand from a regular deck such that the hand contains at least one card from each suit

Snezhnost [94]

Answer:

There are 685464 ways of selecting the 5-card hand

Step-by-step explanation:

Since the hand has 5 cards and there should be at least 1 card for each suit, then there should be 3 suits that appear once in the hand, and one suit that apperas twice.

In order to create a possible hand, first we select the suit that will appear twice. There are 4 possibilities for this. For that suit, we select the 2 cards that appear with the respective suit. Since there are 13 cards for each suit, then we have ${13 \choose 2} = 78$ possibilities. Then we pick one card of all remaining 3 suits. We have 13 ways to pick a card in each case.