Im pretty sure the number of books is your x and the cost is your y
Givens
You have 4 suits in a deck of cards
There are 13 cards in each suit.
You draw a card that is one of 4, 5, 6, 7, 8, 9 There are six cards in each suit that will bring you success.
Formula
Number of cards in a deck = 4 * 13.
Number of cards that are a success = 4*6
P(4 - 9) = 4 * 6 / 4 * 13 = 6/13 = 0.4615
Answer
P(4_9) = 0.4615
If you have choices, please list them.
Answer:B
Step-by-step explanation:
Let the speed of the current equal c
and the speed of the boat in still water equal b.
b + c = 1.5 (b - c)
b + c = 1.5b - 1.5c
0.5b = 2.5c
b = 5c
The speed of the current is 1.5 mph so
b = 5 * 1.5 = 7.5 mph
