counters the B, C, D E are placed in a bag The table shows probabilities of picking each letter at random. Letter A B probabilit
y O.07 0.15 0.26 0.18 (a) Calculate the missing probability in the table (b) Calculate the probability of a Bor C.
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Answer:
Step-by-step explanation:
So we have the expression:
To simplify, simply combine the like terms. Therefore:
Further notes:
To understand why we can combine like terms in the first place, we just need to use the distributive property. So we have the expression:
Now, factor out a y from the three terms:
Do all the operations inside the parenthesis:
And we moved the y back to the front!
This is the same result as before. When combining like terms, this is what we're essentially doing but without doing the distributive property manually. I hope you understand a bit better on how and why we can combine like terms!