epelmanr
10.11.2020 •
Mathematics
When writing a number in scientififc notation, the first number must be greater than 1 but less than 10 true or false
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Ответ:
True
Step-by-step explanation:
It has to be between 1-10. A decimal like 0.3 or 11.5 won't work either.
Ответ:
I tried solving the problem and it didn't make sense until assuming that 22540.75 was a typo for 2540.75.
2540.75 = 6.25x + 5.25y
435 = x + y
x = number of adult tickets
y = number of student and senior tickets
Question is asking to find x
- - - - - - - - - - - - - - - - - -
435 = x + y
2283.75 = 5.25x + 5.25y
Elimination method:
2540.75 = 6.25x + 5.25y
-(2283.75 = 5.25x + 5.25y)
257 = x
257 full priced tickets were sold.
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