ashleydawn6430
15.07.2019 •
Mathematics
The first row of a section in a concert hall has 20 seats. the second row has 21 seats. the third row has 22 seats. this pattern continues and this section has 12 rows. how many seats are in this section?
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Ответ:
The numbers adding are +1. SO
20+12=32.
There are 32 seats in the 12th row.
Ответ:
306 seats total are in this section. I took the test.
Step-by-step explanation:
Ответ:
9x+2y=80
7x+4y=72
-
x=popcorn
y=pretzels