Answer:
2 x 5 = 10
10 x a = 10a
answer = 10a
Step-by-step explanation:
the answer on top is step by step
<u>We are given:</u>
The time-traveller has 79 books, but he can only take 5 books
since we need to find the number of ways he can choose 5 books, we know that the order in which he takes the books does NOT matter
Hence, we will use combination
<u>Finding the number of ways:</u>
Since we will use combination, ₇₉C₅
We know that the formula for combination is (n!) / (r!(n-r)!)
₇₉C₅ = 79! / 5!(74!)
₇₉C₅ = 22,537,515
Therefore, the time traveller can choose 5 books in 22,537,515 different ways
Im mot sure of the answer
Answer:
D
Step-by-step explanation:
All table contents are equal ratios.
1:2
2:4=1:2
3:6=1:2
Answer:
-1
Step-by-step explanation:
We can find the slope by the change in y over the change in x
change in y = down 3 which is -3
change in x = to the right 3 = 3
change in y/ change in x = (-3/3) =-1