Answer:
2
Step-by-step explanation:
There are two lines of symmetry and here I list them:
1) The first is a horizontal line that divides the square in to even parts such that the top part is the projection of the down one trough the symmetry line (and vice versa).
2) The second one is the vertical line that divides the square in two even sides. Note that this line will also divide both stars at half. The left side will be projected on the right one (and vice versa) trough the symmetry line.
A third line could be thought to be a diagonal between opposite vertices, but notice that the stars projection won't by symmetric in this case.
So, we only have 2 symmetry lines.
General Idea:
We can use the below formula to find the area of sector (A), when angle of sector and radius is given:
Applying the concept:
We need to substitute 84 for 
and 160 for A in the above formula:
Conclusion:
If a windshield wiper covers an area of approximately 160 square inches when it rotates at an angle of 84°, the length of the wiper to the nearest tenth of an inch is <u>14.8</u>
Answer:
it is b I just did it
Step-by-step explanation:
1 squared and 4 squared have a difference of 15 so 1^2= 1
4^2= 16
16-1=15
Answer:
He made a mistake in step 2
Step-by-step explanation:
-3x does not equal 6 it clearly states it equals 1
