akselcruses akselcruses

26-08-2020
Mathematics

contestada

find the 40th term of an AP where 12th term is 45 and 17th term is 80.

Respuesta :

oscar236 oscar236

26-08-2020

Answer:

40th term = 241.

Step-by-step explanation:

17th term:

= a1 + 16d = 80

12th term

= a1 + 11d = 45 Subtracting the 2 equations:

5d = 80 - 45 = 35

d = 7

and a1 + 16(7) = 80

a1 = 80 -112 = -32.

Therefore the 40th term = -32 + 39*7

= 241.

Answer Link

Otras preguntas

Hitler believed Germany needed lebensraum, or living space, to thrive. a. True b. False

The two types of weathering are _________ and _________. A. mechanical; chemical B. depositional; chemical C. mechanical; depositional D. chemical; disintegrati

different varieties of spanish are mostly influenced by nearby _____ languages and cultures. a- wealthy b- foreign c- indigenous d- african

Jack and Diane were multiplying 13x7. Jack said that if he added 7 thirteen times he would get the right answer. Diana said that if she added 13 seven times, sh

The main theme of “The Wanderer” involves the a. value of friendship. c. importance of traditions. b. need for safety. d. pain of homelessness.

essay on how can I make my school a happy place

Who was Jefferson Davis? A. The Vice President of the United States B. The President of the Confederate States C. A general in the Union Army D. A general in t

Given the equation representing a system at equilibrium: N2(g) + 3H2(g)<==>2NH3(g) + energyWhich changes occur when the temperature of this system is decr

Which statement concerning sexual reproduction is correct? (1) It is not necessary in order for the individual to survive. (2) The offspring are identical to th

What does the Latin term bicameral mean? A. two chambers B. one camera C. one chamber D. two cameras