4(-3)-3/(-3)+6
-12-3/-3+6
-12+1+6
-12+7
-5
a = 30
a = 16
-a² + 46a -480 = 0
(-a + 30) (a -16) = 0
(-a)(a) + (-a)(-16) + 30(a) + 30(-16) = 0
-a² + 16a + 30a -480 = 0
-a² + 46a - 480 = 0
(-a + 30) = 0 ; (a - 16) = 0
-a = -30 ; a = 16
a = 30
To check:
a = 30
-(30)² + 46(30) - 480 = 0
-900 + 1380 - 480 = 0
480 - 480 = 0
0 = 0
a = 16
-(16)² + 46(16) - 480 = 0
-256 + 736 - 480 = 0
480 - 480 = 0
0 = 0
283.5
So you multiply 6.75 by 21 stools to find the total number of meters. Then you multiply that by 2.
I think it’s 1.75 sorry if this is wrong
Divide 25 by two and which is 12.5 then multiply that by 5 and you get you’re answer
