maddie306
28.10.2020 •
Mathematics
If window washers can wash 15 windows in 18 minutes, how long will it take them to wash 10,00
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Ответ:
1200
Step-by-step explanation:
15/18 * 1000/x
x = 1200
Ответ:
1200 minute / 20 hour
Step-by-step explanation:
Ответ:
Work out the equation:
1st row is 11 seat and the seat after it will be 6 more and 6 more after the second row and so on. This can be written:
6(x - 1) + 11 =
Where x determine the number of row.
Ex: if x = 1 thus, 6(0) + 11 = 11 seat which is the first row.
Find the number of seats in row 18:
6(18 - 1) + 11
6(17) + 11
= 102 + 11
= 113 seats