<span>2x+ y = 3
x = 2y - 1
Make sure there are NO SPACES in your answer. Include a comma in your answer.
It looks like I could substitute the x=2y-1. Into 2x+y=3
2(2y-1)+y=3
4y-2+y=3
5y=5
y=1
x=2(1)-1
x=1
(1,1)
CHECK
2x+y=3
2(1)+(1)=3
2+1=3
3=3
Left hand side=Right hand side
Check other equation
x=2y-1
1=2(1)-1
1=1
Therefore the solution is (1,1). Since the left hand side= right hand side in each equation</span>
8+12+4= 24
This is the total amount of marbles. You’ll divide the green marbles by the total amount since you want the probability of green marbles.
4/24= .16 or 16% possibikity
Simple area working out:
Area of a triangle: L x W
———
2
Area of a square: L x W
17 (L) x 17 (H) = 289cm^2
289
——- = 144.5cm^2
2
There are 4 triangles so:
144.5 x the amount of triangles (4) = 578
Add everything together:
578 + 289 = 867
Answer: 867
