alan30
alan30
02-09-2017
Mathematics
contestada
how to find the sum of 2+4+6....+40?
Respuesta :
KhaiLi
KhaiLi
02-09-2017
Answer 420.
a, is the first term. d is difference.
Since this is an arithmetic progression, I use this formula.
Un = nth term
Sn = sum of terms.
First find the number of terms, which is 20.
Then use the second formula to find the sum.
Answer Link
VER TODAS LAS RESPUESTAS ( 99+ )
Otras preguntas
Points A and B have opposite x-coordinates but the same y-coordinates. How many units away are each of the points from the y-axis?
If the charge of a particle doubles, what happens to the force acting on it? It doubles It gets reduced by a factor of two It stays the same A charge exerts
Which of the following statements best describes changes in Earth's environment over the past 4 billion years? Solar brightness and oxygen generally decrease, w
6. Creeping eruption can be treated with which one of the following antiparasitic drugs?A MetforminB MethotrexateC Minipress (1)D Mitezos|what drug is used for
explain the result of 1905 revolution
If f(x) is a third degree polynomial function how many distinc complex rules are possible ?
Find the fixed points of f(x) = 2x - x3 and determine their stability.
Problem 5.58. Supposef XY and g : Y Z are functions If g of is one-to-one, prove that fmust be one-to-one 2. Find an example where g o f is one-to-one, but g is
How does the reaction, A + BC ⇌ AB + C, differ from the reaction, N2 + 3H2 ⇌ 2NH3 + energy, by which ammonia is synthesized?
What are the advantages of liposomes as a drug delivery system for antimicrobials?
