Suppose the newspaper states that the probability of rain today is 55%. what is the complement of the event "rain today"?
1. rain yesterday
2. rain tomorrow
3. no rain today
4. no rain tomorrow

3. No rain today.

Step-by-step explanation:

We have been given that the newspaper states that the probability of rain today is 55%. We are asked to find the complement of the event "rain today".

We know that complement of an event A is everything else in the sample space that is not A or that does not represent A.

For example event is {Sunday}, so it complement will be all days of week except Sunday that is {Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}.

The event is "rain today" for our given statement and the complement of "rain today" will be there is "no rain today".

Therefore, 3rd option is the correct choice.

Option  3.

Step-by-step explanation:

It is given that according to a newspaper the probability of rain today is 55%.  

We need to find the complement of the event "rain today".

Complement of an event: It contain all possible outcomes other the required event.  

Given event : Rain today

Complement of given event represent that there is rain but not today.

Complement of given event : No rain today.

Therefore, the correct option is 3.

what is the starting amount? the question is not clear sorry.

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