Answer:
The first answer is 36 and the second is 80 because each pattern increases by one tile longer and wider so pattern 4 would be 4 by 4 so there would be 16 square tiles and 16 circular tiles and pattern 5 would have 25 square tiles and 20 circular tiles.
X = length
2x + 2(x + 105) = 318
2x + 2x + 210 = 318
4x = 108
x = 27
The length is 27 meters long, and the width is 132 meters wide.
Answer:
12
Step-by-step explanation:
If there are 3 classrooms that each have 25 desks and there are a total of 87 students, how many more desks need to be added to a 4th classroom, that was originally empty, so that each of the students has a desk to sit in?
25 * 3 = 75
87 - 75 = 12
8/40 is a larger percent
6/20 is larger
400 to 500 is a larger change
50 to 40 is a larger change
2x + 5y = 10....multiply by -1
2x + 3y = 6
---------------
-2x - 5y = -10 (result of multiplying by -1)
2x + 3y = 6
---------------add
-2y = - 4
y = -4/-2
y = 2
2x + 5y = 10
2x + 5(2) = 10
2x + 10 = 10
2x = 10 - 10
2x = 0
x = 0
solution : (0,2)
