Answer:
816 square feet
Step-by-step explanation:
13(16+20+12) + 16(12) = 816
Yes, they're equivalent values.
Answer:
4.19
Step-by-step explanation:
Find the mean:

Find the standard deviation:

3x²-y³ - y³ - z if x = 3, y = -2, z = -5
Simply plug in all the values :)
3(3²) - (-2³) - (-2³) - (-5)
Simplify.
3(9) + 2³ + 2³ + 5
Simplify.
27 + 8 + 8 + 5
Simplify.
35 + 13
Simplify.
48
~Hope I helped!~