Answer:
20.36
Step-by-step explanation:
The area of the whole circle is pi*3.6^2 = 40.715 (rounded). However, the shaded portion is only half of the circle, since the arc is 180 degrees, so we divide this by 2 to get about 20.36.
800 because 80% of 800 is 640
Answer:
Step-by-step explanation:
50% = 0.5
10%=0.1
75%=0.75
1.
If I could see the graph correctly, then the y-intercept should be -5.
First figure out how many people are 1/4 of 84 by dividing 84 by 4 =21. Then multiply 21 by 3 to figure out how many people are 3/4 of 84 =63. 63 people guessed incorrectly and 21 people guessed correctly:)