Answer:

Step-by-step explanation:
The square in the middle has a length and width of 3, so multiply. <u>9</u>.
All of the triangles have a base of 3 and a height of 2. The area equation for triangles is

So base*height is 6. Divide that by 2 or multiply by 1/2.
You get 3. There are 4 triangles, so multiply <em>that</em> by 4. <u>12</u>.
Add 12 and 9 together, and you get:

I hope this helps!
Answer:
To find the answer, you multiply all of them together when your finding area.. so.. 2x3x6x3 = 108
Answer:
cos (theta) = √21/5
Step-by-step explanation:
sin (theta) = 2/5
(sin (theta))^2 = 4/25
4/25 + (cos (theta))^2 = 1
(cos (theta))^2 = 1 - 4/25 = 21/25
cos (theta) = √21/5
Answer: Michael has 87 comic books while David has 41 comic books.
Step-by-step explanation:
Let x represent the number comic books that Michael has.
Let y represent the number of comic books that David has.
Michael has 5 more comic books than double David's collection. The expression would be
x = 2y + 5
If together they have a total of 128 comics, it means that
x + y = 128- - - - - - - - - -1
Substituting x = 2y + 5 into equation 1, it becomes
2y + 5 + y = 128
3y + 5 = 128
3y = 128 - 5
3y = 123
y = 123/3
y = 41
Substituting y = 41 into x = 2y + 5, it becomes
x = 2 × 41 + 5
x = 87
Answer:
x=15
Step-by-step explanation:
This is an equilateral triangle. That means all sides are equal and all angles are equal
An equilateral triangle has angle measurements of 60 degrees
60 =4x
Divide each side by 4
60/4 = 4x/4
15 =x