Answer:
126
Step-by-step explanation:
To calculate this, we need to assume at least one white marble will be picked... so let's take it out of the bag. Then we need to pick 4 more marbles... it's just then a combination calculation.
How many marbles is there in total? 4 + 3 + 2 + 1 = 10
We do just as if we had removed one white marble from the bag... so that leaves 9 in the bag.
We have to pick 4 out of those 9.... so, it's simple combination calculation:
C(9,4) = 9! / (4! (9--4)!) = 9! / (4! 5!) = 126
Some of those grabs will have 2 white marbles... but we're assured that there are 126 ways to combine the 10 marbles so there's at least one white in the 5 picked (since we forced it in our calculations).
What’s the f stand for and use that to help you answer
Answer:
3/8
Step-by-step explanation:
The expression can be rewritten as b + 1/8 + c
substitute b and c
2 + 1/8 - 7/4 = 16/8 + 1/8 - 14/8 = 3/8
Answer:
x = 18
Step-by-step explanation:
solve by simplifying both sides of the equation then isolating the variable
It’s 0.6 repeating , hope this helps
