1 ) There are 36 students in a class and 18 of these students passed their Chemistry test. What percentage of these students passed their test? Round your answer to the nearest
whole number if necessary.

60% of the students passed the test

Step-by-step explanation:

total # of people taking the test: 36

# of people passed: 18

# of people failed: 36-18 = 18 (18 people failed the test)

percentage= (number of favorable outcomes/total number of outcomes)* 100%

(18/36)*100

= 60%

b

2

−

b

b

3

+

7

b

2

+

14

b

+

6

%

−

3

b

3

+

7

b

2

+

14

b

+

6

%

step-by-step explanation:

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm