4a^4 -2b^2 +40
a=2
b=7
4(2)^4 -2(7)^2 +40
PEMDAS is what your gonna use to solve this you go from right to left
First is P which is parentheses which is none
second is E which stands for exponents
4(32)-2(49)+40
now MD multiply or divide
128-98+40
now add or subtract
30+40
last one
70 this is your answer i hope
In the first octant, the given plane forms a triangle with vertices corresponding to the plane's intercepts along each axis.



Now that we know the vertices of the surface

, we can parameterize it by

where

and

. The surface element is

With respect to our parameterization, we have

, so the surface integral is
Answer:
B
Step-by-step explanation:
The figures are similar.
the side that is 16 on A is similar to the side that measures 4 on figure B
24 is similar to 6
32 is similar to 8
24 is 4 times 6
24 / 6 = 4
32 is 4 times 8
32 / 4 = 4
and 16 is 4 times 4
16 /4 =4
Figure A is 4 times bigger than Figure B. That is your scale factor.