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 ( 84+ )
Otras preguntas
name the sides in each figure that look parallel name the sides in each figure that look perpendicular
combine like terms. 42y + 22y
use 3.14 for pi to estimate the area of a circle if the diameter is given 28.2m round the answer to the nearest hundredth if necessary
use 3.14 for pi to estimate the area of a circle if the diameter is given 28.2m round the answer to the nearest hundredth if necessary
Part 1—Error Detection Each of the Spanish sentences below is incorrect in either grammar or meaning. Rewrite each sentence correctly in SPANISH. 1. El rey que
Which of the following is not a way carbon dioxide travels in the blood?
In which scenario would you view Word data in Excel? A. You want to analyze data from a table within a report, with functions and charts. B. You want to i
find the equations of the following lines b. Gradient -4 and passing through point (2, 1) c. Passing through the points (2, -1) and (4, 2) d. Passing through
Can someone help me with the bottom one aka 7-62 please
What is the volume of this figure? Enter your answer in the box. _____ units³
