uwais96915 uwais96915
  • 04-03-2018
  • Mathematics
contestada

find A if 17th and 18th terms in the expansion of (2+A)^50 are equal.

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 04-03-2018
The 17th term is 50C16*2^34*a^16
The 18th term is 50C17*2^33*a^17

The ratio of these two terms is (17th term)/(18th term) = 1/a. We want the value of this to be 1, so
.. A = 1

_____
My calculator says
.. 50C16 = 4,923,689,695,575
.. 50C17 = 9,847,379,391,150
the latter being exactly 2 times the former.
Answer Link

Otras preguntas

Historically, the use of wells appears in the A) Old Stone Age B) New Stone Age C) Bronze Age D) Iron Age E) Copper Age
Which type of community will have more competition than cooperation?
round off 3.647correct two decimal placescorrect the nearest whole number​
2. Most of Asia and Europe are located on the same landmass. a. True b. O False
Researchers were interested in looking at air quality in different regions of the United States. The following dot plot represents the number of days in a certa
helpppppppp Find the hypotenuse of the triangle, the distance between points (4, 4) and (-2,-2). [?] (4.4) Enter the number that 6 goes beneath the radical sym
PLEASE I NEED HELP! (responsible response please, I will mark you brainiest!)
GIVING 30 POINTS PLZ ANSWER the number a is smaller than the number b by 1/5 of b. by what part of a is b bigger than a?
solve for d 7.7 - 2 = d what is it ​
No entiendo nada, you can help me ???? ​