Answer:
25
Step-by-step explanation:
2+5=7
25 reversed is 52
52-25=27
Answer: 0.089
Step-by-step explanation:
Number of combinations of n things taking r at a time :-
Given : A box has eight green marbles, five red marbles, and seven blue marbles.
Total marbles = 5+8+7=20
We choose three marbles from the box at random without looking.
Number of ways to choose 3 marbles with same color :-
(1)
Total ways to select 3 marbles from 20 marbles :-
(2)
Now, the required probability (divide (1) by (2)):-
Hence, the required probability : 0.089
Answer:
20 miles per hour
Step-by-step explanation:
Given that the train left for London, and after 9 hours later, a car traveling 80 miles per hour tried catching up to the train. After 3 hours, the car caught up
Which means that the car travelled the same distance in 3 hours as the train travelled in 9 + 3 = 12 hours
Let the distance be d
Given the speed of car is 80 miles per hour
We know that
d = 240 miles
Now for the train Average speed = total distance / total time taken
Average speed of the train = = 20 miles per hour
Answer:
-7?
Step-by-step explanation:
I mean, is the question 20 - 27 =? Or it's something else? Lol.
20 - 27 = -7, it's very straightforward cannot write it in more detailed way. When we substract a number from another and the first one is smaller the result is a negative number. Imagine someone sells up to 3 apples, you ask him to give you 5. He gives you all 3 of his so he has 0 but you force him to go and get another 2 for you. He lost another 2, so he has less than 0 now. He has -2 apples: 3 - 5 = -2.
Now, I don't know if this is the question or these are set of exercises you must solve and your picture just didn't upload. Let me know if you need help with anything else.
Answer:
choose the third one because a third one look like talking about the degrees and length