For this case we have the following function:
By definition, we have that the domain of a function is given by all the values for which the function is defined. The given function is not defined when the denominator is zero.
So:
Thus, the function is not defined at 
The domain is given by all real numbers except 2.
Answer:
The domain is given by all real numbers except 2.
First of all, you have to find the area of both triangles:
Or just 16 because there are 2 of the same triangles.
Now you have to find the area of the 3 rectangles.
The two that are in the front are 4*3 (l*h) or 12*2 (because there are 2 congruent rectangles. The area of those rectangles is 24 square mm.
Now you find the area of the back rectangle:
5.7*3 = 17.1
Finally, you add all the found numbers to figure out the surface area.
17.1 + 16 + 24 = 57.1 square millimeters.
Hope this helped,
Loafly
the answer is 80 take the positive and negative and use the sign change rule
Let the number be represented by x
2x=60+ 5x -20*2=60+5*-20
2x-5x=5x-5x+60 -40=60+-100
-3x=60 -40=-40
-3x/-3=60/-3
x=-20
Therefore the number is -20
5) 2*5
over which equals 10/40 or 1/4
5*8
6)8*3=24
15*10=150 answer is 24/150
7)2*12=24
9*13=117 answer 8/39
8)7*12=84
8*1=8 answer 8 and 1/2 or 84/8
9)4*5=20
12*1=12 answer 1and 2/3 or 20/12
10) 4*4=16
9*9=81 answer 16/81
11)3*7=21
14*9=126 answer 1/6
12)8*24=192
9*11=99 answer 1 and 31/33 or 192/99
