Answer:
Step-by-step explanation:
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Answer:
No solution
Step-by-step explanation:
Using substitution, we get to the answer 12=0, which is untrue meaning no solution.
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Answer:
a. 
b. 
c. 
Step-by-step explanation:
Given,
Total books = 40,
Maths books = 20,
History books = 15,
Geography books = 5,
a. If a book is randomly selected,
Then the probability that the book is a history book,




b. If two book is randomly selected,
Then the probability that both books are from history,





c. If two book is randomly selected,
Ways of selecting any two books from different subjects
= maths and history + maths and geography + history and geography,




Then the probability that both books are from different subjects



Answer:
6^{4} · 4^{4} · b^{3}
Step-by-step explanation:
Collect identical number terms to get the exponent:
6.4⋅6.4⋅6.4⋅6.4⋅b⋅b⋅b
As you can see, there are four "6s", four "4s" and three "b"s
So we got the conclusion the answer is just 6^{4} · 4^{4} · b^{3}
The second one isn’t a factor… if you meant (x+6) then the two zeros are 7 and -6