1 is not true generally, while 3 and 4 are never true. 2 is the only generally true conjecture.
Total number of cards = 52
Total number of spades = 13
Total number of face cards that are not spades = 3 x 3 = 9
Total number of spades or face cards = 13 + 9 = 22
P(a or b) = 22/52 = 11/26
Answer: 11/26
Answer:
117
100
10
7
Step-by-step explanation:
9.75x12=117
The length of the parametric curve (call it <em>C </em>) is given by

We have


Now,

so that the arc length integral reduces to

which has an approximate value of 53.4596.
80:2
80 divided by 2 ... which gets you 40. About 40 miles an hour.
Your ratio: 80:2