Answer:

Step-by-step explanation:
<em>Look at the picture.</em>
We have
square with side length a = 9
trapezoid with base lengths b₁ = 9 and b₂ = 6 and the height length h = 6
right triangle with legs lengths l₁ = 3 + 6 = 9 and l₂ = 6
The formula of an area of a square

Substitute:

The formula of an area of a trapezoid:

Substitute:

The formula of an area of a right triangle:

Substitute:

The area of the shape:

The pack of 15 because that makes each pen around .59 cents, and the 8 pack is .61 cents.
I would have wished to see Venn Diagram, however I will try to answer this problem:
A={1,2,3,4}
B={1,2,5,6}
(A∩B) ={1,2}
The complement of (A∩B) is (A∩B)'
(A∩B)' = A'∪B' (De Morgan's law)
A' ={5,6} and B'={3,4}
A'∪B' = {5,6} ∪ {3,4}
A'∪B' = (A∩B)' = {3,4,5,6}
Answer:
-4
Step-by-step explanation:
5 - 9 = -4.
Only 4 - 9 = -5 is smaller, but it is an odd number.
5x=2x+24
5x-2x=24
3x=24
x=24/3
x=8
Now you can verify by putting 8 in the x :)