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 ( 43+ )
Otras preguntas
multipule choice Which numbers belong to the range of the relation {(1, 0), (4, –3), (–3, 2), (5, 0)}? Choose all answers that are correct. A. 5 B. 2 C. 0 D
Which ratio is the odd one out? 5:30 2:12 7:41 1:6 10:60
I'm havingn trouble in math. What's 3/4 - 2/5 in fraction form?
How do you solve this two step equation 6=a/4+2
why is the understanding of classification an important life skill
what multiplies to get -80 but adds to get 2
every container of fruit salad contains 1/3 of an apple. how many whole apples are there in 6 containers of fruit salad
Thomas has a box with four black color bottles and eight gray color bottles. Two bottles are drawn without replacement from the box. What is the probability tha
how did Renaissance art use humanist ideas
Solve for x. 4x-5/y=2z
