3 years ago

3. A point with the coordinates (-C, -d) is shown on the coordinate grid.

Mathematics

1 answer:

strojnjashka [21]3 years ago

4 0

Answer: dont know sorry

Step-by-step explanation:

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There are 9 people that have a conversation with each other exactly one time.

Sedbober [7]

The question is an illustration of arithmetic sequence.

The number of conversation for 19 people is 171

(a) 9 people

$Total = \frac{9 \times 8}{2}$

9 represents the number of people

8 represents the number of conversation each person had

2 represents the number of people having a conversation at once (i.e 2 people at once)

(b) 19 people

We have:

$n = 19$

The number of conversation is:

$Total = \frac{n \times (n -1)}{2}$

So, we have:

$Total = \frac{19 \times (19 -1)}{2}$

$Total = \frac{19 \times 18}{2}$

$Total = 19 \times 9$

$Total = 171$

Hence, the number of conversation for 19 people is 171

Read more about arithmetic sequence at:

brainly.com/question/18109692

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3 years ago

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Svetradugi [14.3K]

B The percentage change is 55%

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Zach borrows $1910 at 2.6% simple interest per month. When Zach pays the loan back 3 years later, how much interest does Zach pa

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Answer:

$1884 I think

Step-by-step explanation:

$1910 - 2.6% = $1884

Sorry if it is wrong!

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Ratling [72]

Answer:

Step-by-step explanation:

16 |‾‾‾288‾‾‾

16 goes into 28 once = 1 (as the tens digit = 10)

28-16=12 (remainder)

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0.5*10=5

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