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3 years ago

Combining like terms -8(5k+9) show how you got the answer

Mathematics

2 answers:

Vedmedyk [2.9K]3 years ago

8 0

You multiply the -8 to the 5k and 9 and you will get -40K-72K

NNADVOKAT [17]3 years ago

7 0

Answer:

5k + 17

Step-by-step explanation:

You can combine 9 and -8. 9 is positive number and you keep it where it is, then open up the parentheses and move -8 to the right but since you are moving it to the other side you have to change the sign so it would be 9 + 8 which equals 17. You can't combine 5k so you would get your answer.

(5k +17)

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A drawer contains 12 brown socks and 12 black socks, all unmatched. A man takes socks out at random in the dark. 21. Required in

avanturin [10]

Answer:

6 socks

Step-by-step explanation:

What we must do is calculate the probability of this happening, that he takes out two black socks in the first two taken out.

There are 12 black socks and in total they are 24, therefore the probability of drawing 1 is:

12/24

and now the probability of getting another one is 11 (there is one less outside) and in total they are 23:

11/23

the final probability is the multiplication of these events:

(12/24) * (11/23)

P = 0.24

Now, to know how many you should get, we multiply the probability by the total number of socks, that is:

0.24 * 24 = 5.76

So you must take out at least 6 socks for the above to happen.

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4 years ago

If A = {1, 2, 3} and B = {1, 2, 2, 3}, is B ⊆ A? If so, is A = B?

Serjik [45]

Answer:

yes, yes

Step-by-step explanation:

B={1,2,3} it doesn't matter if it has ten 2's or one!

so A=B and A⊆B

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3 years ago

Unit 1 Lesson 4 Quiz

Arisa [49]

Answer:

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Step-by-step explanation:

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3 years ago

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Alex

Answer:

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Step-by-step explanation:

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4 years ago

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Answer:

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Step-by-step explanation:

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