What is the frequency of a pendulum that completes one back and forth swing is 8.43 seconds?
Pick the one with correct units.
8.43 hertz
.12 hertz
8.43 seconds
.12 seconds

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

x

step-by-step explanation:

6.5

step-by-step explanation:

you said it was in the question

~courtney