Length (L): 2w
width (w): w
Perimeter (P) = 2L + 2w
78 = 2(2w) + 2(w)
78 = 4w + 2w
78 = 6w
13 = w
Length (L): 2w = 2(13) = 26
Answer: width = 13 meters, length = 26 meters
Answer:
420 students
Step-by-step explanation: I first did 300/5 which got me 60, meaning that one bus could transport 60 students. Then you do 60*7 (60 is how many students on each bus, and 7 is how many buses there are) and get 420 students on 7 buses.
Answer:
1/20 because it has no effect so it would always be the smallest fraction
Step-by-step explanation:
<span>books to bookmarks
books : bookmarks
10 : 1
10 * 3 : 1 * 3
30 : 3
3 bookmarks
Since the book store sold 30 books they also sold 3 bookmarks.
Answer: 3 bookmarks</span>
3x+y=-5
12x+5y=27
Let y =-5-3x
Insert y into equ.2
12x+5(-5-3x)=27
12x-25-15x=27 den rearrange
-3x=2 den x =-2/3
Den put xinto equ 1
3(-2/3)+y=5
-2+y=5(collect like terms)
Y =7
