So if you're adding two negatives you move left, positive you move right, and when you have to determine a negative, and a positive you just have to see which one is the farthest from zero which the farthest one's sign is either positive, or negative. Positive to move right, and negative to move left.
Answer:
528 cm²
Step-by-step explanation:
First I would calculate the area of the side rectangles:
20 x 9 = 180 cm²
There are two identical rectangles on both sides so i would x2
180 x 2 = 360 cm²
The area of the middle rectangle:
6 x 20 = 120 cm²
The area of the triangles:
Area of a triangle = (Base x Height)/2
8 x 6 = 48
48 ÷ 2 = 24
There are two identical triangles on the bottom and the top so x2
24 x 2 = 48
Now add all the values up:
360 + 120 + 48 = 528 cm²
I hope this helps!
okay so you have 1/4 and 5 1/2
make 5 1/2 a improper fraction
so you now have 1/4 and 11/2
now do 
I hope this helps you
I feel bad study island is the worst!
Answer:
$80
Step-by-step explanation:
It's khan so you don't need the explanation but for those interested then here:
K=30x+20 - Kayla
S=35x+10 - Sara
60+20=80
70+10=80
So they match up at $80
