Answer:
a) 0.2
b) 0.2
c) 0.5
Step-by-step explanation:
Let 
be the event "the car stops at the signal.
In the attached figure you can see a tree describing all possible scenarios.
For the first question the red path describes stopping at the first light but not stopping at the second. We can determine the probability of this path happening by multiplying the probabilities on the branches of the tree, thus
For the second one the blue path describes the situation
For the las situation the sum of the two green path will give us the answer
The answer to this is D or at least that's what I got
30 seconds every 15 minutes.
The total time passed was 8 hours and 16 minutes. 16 minutes late meant that the trip normally takes 8 hours. over 8 hours 16 minutes were lost. 16min divided by 8 hours is 2 minutes per hour. 2 minutes is 120 seconds (2*60). there are four 15 minute intervals in an hour so 120/4= 30 seconds per every 15 minutes.
6:16
We can divide 2 to both numbers.
6 / 2 = 3
16 / 2 = 8
3/8
5/9
Multiply 2 to the numerator and denominator:
2 * 5 = 10
2 * 9 = 18
10/18
Do it again:
2 * 10 = 20
2 * 18 = 36
20/36
Answer:
Step-by-step explanation:
in complementary angle sum of two angle is always 90 degree
let the other angle be x
x+73=90
x=90-73
x=17 degree
