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butalik [34]
3 years ago
5

Help pls and thank you :)

Mathematics
2 answers:
brilliants [131]3 years ago
8 0
D (x=7) is the answer lol
saul85 [17]3 years ago
6 0
D (7) should be the correct answer.
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bixtya [17]
Answer
A)

Explanation


4 0
3 years ago
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jo has a total of 61 dimes and quarters in her piggy bank. she has 3 more quarters than dimes. the coins have a total value of $
Zepler [3.9K]
D+Q=61 => D=61-Q
3+D=Q

10D+25Q=1090

10(61-Q) + 25Q=1090
610-10Q+25Q=1090

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4 0
3 years ago
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Prove that the gregorian calendar repeats itself every 400 years.
Setler79 [48]

The calendar obviously has an integral number of years and months in 400 years. If it has an integral number of weeks, then it will repeat itself after that time. The rules of the calendar eliminate a leap year in 3 out of the four century years, so there are 97 leap years in 400 years. The number of excess days of the week in 400 years can be found by ...

(303·365) mod 7 + (97·366) mod 7 = (2·1 + 6·2) mod 7 = 14 mod 7 = 0

Thus, there are also an integral number of weeks in 400 years.

The first day of the week is the same at the start of every 400-year interval, so the calendar repeats every 400 years.

3 0
3 years ago
X - Y =4<br> - 2x+y=18<br> Linnear system
Dmitry_Shevchenko [17]

there is no answer to this  so i can't help you.?

8 0
3 years ago
Is 0.762050555854466 rational or irrational and why
Rainbow [258]

Answer:

No

Step-by-step explanation:

This is because it is a forever ongoing number. Here is an examples 7, pie, 5, and 2

tell me if this helped pls mark brainliest

9 0
3 years ago
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