Gary gets 4 marbles, because 12/3 is 4. So for the ratio 3:1 to apply, Jo gets 12 marbles and Gary gets 4.
Area of a trapezoid is A=height over 2 B1 +B2, so 10+10=20, then 20(8)=160, 160/2=80. Answer is b.
Answer: x=30
Step-by-step explanation:
The sum of the angles must be 360.
4x+3x+3x+2x = 12x
12x = 360
x =360/12 = 30
Answer:
firt thing i would do is take out things that are alike but if these are the options then i would a) multiply the first equation by -1
Answer:
1)
2)
3)
4)2
Step-by-step explanation:
1) 5x + 3y = 8
3y=8-5x

hence intercept is 
2) 10x + 6y - 12 = 4
10x + 6y = 16
6y=16-10x

hence intercept is 
3) 2x – 3y = 5
3y=2x-5

hence intercept is 
4) 3x + 2y = 1
2y=-3x+4

hence intercept is 2