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 ( 92+ )
Otras preguntas
Can someone please complete this with work showed? I don't understand it and need to catch up on some work from when I was absent.
f(x)=7x+6÷x²-x help pls :)
pigment found in plants are necessary for
Recognizing Elements of a Strong Opinion Next to the statues and the head, the slab seems unimpressive at first glance. It is roughly the size of a tabletop-thr
You need to get to class, 200 meters away, and you can only walk in the hallway at about 2.5 m/s. How long did it take you to get to your destination? HELP!!! M
The elaboration likelihood model emphasizes the use of __________ persuasion and __________ persuasion methods. A. direct . . . elaborative B. peripheral . . .
Winston studies a topography map that shows camping and hiking areas. Winston is most likely using the map for which purpose? science engineering government rec
Which item belongs to one of the five food groups in the USDA's MyPlate Food Guidance System? A. oatmeal cookie B. milk C. olive oil D. salt
What is the visual effect of the excerpt
Help me outtt please :(
ACCESS MORE
EDU ACCESS
Universidad de Mexico