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Answer:</h2><h2>The theoretical probability of four students from your school being selected as contestants out of 8 possible contestants spots =

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Step-by-step explanation:
The number of students participated = 30
Total audience = 150
By probability , to find the solution =
where n(E) is the number of favorable outcomes,
n(S) is the number of total outcomes.
n(S) is the number of ways any 8 students can by picked from the audience= 
n(E) is the probability of picking four students from our school and five students from another school.
n(E) =
= 
=
= 
Answer:
1 hour 42 minutes
Step-by-step explanation:
Given: Speed of 1st trucker= 62 mph
Speed of 2nd trucker= 66 mph
Total distance need to cover to be in contact is 270 miles
1st trucker start 1 hour ahead of 2nd trucker
Lets assume 2nd trucker take `x` hours to be in contact and 1st trucker take `(x+1)` hours.
We know, distance= 
1st trucker, distance
∴ 
2nd trucker, distance
∴
Now, putting the values in an equation.

⇒ 
Opening the parenthesis to solve and subtracting both side by 62
⇒ 
∴ x=
= 1 hour 42 minutes
∴ It will take 1 hour 42 minutes to be able contact each other after first trucker leaves.
Lets see...
The answer is yes! This is because when you solve for a common denominator, you need to multiply the numerator by what you multiplied to get the denominator. I solved the problem for you, which is displayed in the picture below:
You can see that the answer in improper form is 8/3 and in proper form is 2 2/3. If you look at the work, I believe you can draw conclusions from there. I am not good at explaining and I apologize. Good luck on your homework, common denominators are not hard to solve and I bet you will do a wonderful job in solving questions like these! You will soon become a Master at solving these kinds of questions in about a day from now and/or when you get to the upper grades like me! :)
So the odds of getting a female or a male is 1/2. To make the odds of the number cube be 1/2, you need to divide the 6 sided die in half. the easiest way is to make even numbers represent a gender and odd numbers represent a gender.