The surface is the sun of all the sides. With the information provide I can only work out the volume, which is 420cm^3
B.) 30 miles
You needed to add all the numbers together then divide by the amount of numbers there which is 4. (ex: 36 + 26 + 30 + 28 = 120 120<span>÷4= 30)
hope that helps!</span>
4x - 3y = 8 ⇒ 8x - 6y = 16
5x - 2y = -11 ⇒ 15x - 6y = -33
-7x = 49
-7 -7
x = -7
4x - 3y = 8
4(-7) - 3y = 8
-28 - 3y = 8
+ 28 + 28
-3y = 36
-3 -3
y = -12
(x, y) = (-7, -12)
To use elimination you have to multiply the first graph by 2 and the second graph by 3 so that the two y-axis can be equal to -6. Then you do the rest to find the answer of the x-axis and the y-axis.
Each number is 1/3 of the number before it.
After 18 come 6, 2, 2/3, 2/9, 2/27, 2/81, ... etc.
