The number of triangles formed by the diagonals of a 21 sided polygon is C(21,3) = 21x20x19/3x2x1 = 1,330.
23C
41
c/15 = 21/9 → c/15 x 15 = 21/9 x 15 → c = (7x3)/(3x3) x (3x5) → c = 7 x 5 = 35
23
C+ (-2)= 21= 21+2= 23+ (-2)= 21 23+ (-2)= 21 is the same as 23- 2= 21
c.23
21 to 23 C
21 and 23
21 and 23
There are approximately 5.8x10^21 atoms in 9.7x10^-3 moles of carbon. This is calculated by multiplying Avogadro's number (6.022x10^23 atoms/mol) by the number of moles of carbon.
Add the (5) temperatures and divide by the number of days (5). 26 + 24 + + 19 + 21 + 25 = 115 divided by 5 is the average, 23 degrees Celcius.
21 is not a prime.
William C. Woxlin is 23 years old (birthdate: January 21, 1988).
87 degrees C.
c − b = aare minuend (c) − subtrahend (b) = difference (a).
You should be more specific. C could be any number. Let's say that c=3 3x7=21 21-4=17