Answer:
d
Step-by-step explanation:
40% = 40/100
40/100 X = 8
X = 800/40 = 20
X% of 40 = 20/100*40 = 8
The commutative property is when you change the order but not the answer. To better understand what they are asking you, let's let x=1- 6 * 2 * 1=12; Answer A wouldn't be right because there are no 6,2, or x's. Remember you just change the ORDER not the GROUPING so Answer B is wrong too. Now Answer C and Answer D are left. Now you just need to look at the signs. 6(2) just means 6 TIMES 2 so pick the option with multiplication. So your answer is C. Hope I helped!
If 
and 
have the same sign, then either
or
If and have opposite sign, then
or
This is to say that the region has boundaries given by these two sets of parallel lines, so we can equivalently describe the region with the set
The area of 
is given by the double integral
To compute the area, change the variables to
The Jacobian for this transformation is
with determinant 
. Then the integral transforms to
which is 1/12 the area of a square with side length 12. Hence the integral evaluates to
.
Answer:
see explanation
Step-by-step explanation:
Consider
x² = 64 ( take the square root of both sides )
x = 8 , x = - 8 ← are the critical points
Then for x² > 64
x < - 8 or x > 8
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