0
3.5
Still curious? Ask our experts.
Chat with our AI personalities
Jordan
Ezra
Fran
Add your answer:
Earn +20 pts
Brooke has to set up 70 chairs in equal rows for the talent show but there is only space for 20 rows what are the possible number of rows that brooke can set up?
20
There are 600 students. Every chair is filled. Each row contains the same number of chairs. If you add five more chairs to each row there would be four fewer rows. How many chairs are in each row?
to begin with there are 24 rows and 25 chairs in a row r = number of rows c = number of chairs in a row 600 chairs total: RC = 600 Adding 5 more chairs allows you to remove 4 rows: (c + 5) (r - 4) = 600 (c + 5) (r - 4) = RC RC + 5r - 4c - 20 = RC 5r - 4c - 20 = 0 5r - 4(600/r) - 20 = 0 5r^2 - 2400 - 20r = 0 5r^2 - 20r - 2400 = 0 r^2 - 5r - 480 = 0 (r-24) (r+20) = 0 r = 24 or r = -20 If r = 24, then c = 600/24 = 25 24 rows of 25 chairs each to begin with Check your work: 24-4 = 20, 25+5 = 30, 30*20 = 600 Check.
What is 5 and 3 5ths divided by 4 7ths?
five and three fifths = 28 / 5 = 196 / 35 4 / 7 = 20 / 35 divide top rows = 196 / 20 = 9.8 / 1 = 9.8
What is 400 divided by 20?
0.05
How many rows can you make out of 80 students?
Having the same number of students in each row, 80 students can be arranged in 80 rows of 1, 40 rows of 2, 20 rows of 4, 10 rows of 8, and 5 rows of 16.
