Single digit primes are 2, 3, 5 and 7. Only 3 is 3-primable
Two digit numbers that are 3-primable are
27, 33, 57, 72, 75
The 3 digit numbers that are 3-primable are
222, 333, 555, 777
225, 252, 522
237, 273, 327, 372, 723, 732
255, 525, 552
357, 375, 537, 573, 735, 753
There are 28 3-primable natural numbers less than 1000
Answer:
4/5
Step-by-step explanation:
I believe you meant sin Ф = 3/5, since sin 0 = 0 (zero).
sin Ф = 3/5 = (opposite side) / (hypotenuse).
cos Ф = (adjacent side) / (hypotenuse)
Use the Pythagorean Theorem to find the length of the adjacent side:
(adj)² + (opp)² = (hyp)² becomes (adj)² = 5² - 3² = 25 - 9 = 16.
Then (adj) = +√16 = +4
and so cos Ф = (adj) / (hyp) = 4/5
Answer:
51.6
Step-by-step explanation:
500,000 is that number rounded.
