02-09-2017
Mathematics

contestada

how to find the sum of 2+4+6....+40?

Respuesta :

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.

Ver imagen KhaiLi

Answer Link

Otras preguntas

Write a sentence about animals that includes two common nouns

Which of the following correctly defines politics?

George Washington how old would he be today

Which of these painters produced the most self-portraits along with numerous portraits of wealthy merchants? a. Poussin b. Vermeer c. Caravaggio d. Rembrand

Antonyms for ecosystem

National governments have more power than any other human institution in the world. Why do you think this is the case?

The universal law of gravity states that all objects attract all other objects. Why is this considered a universal law? a. Gravity is a principle that is in ef

Explain whether you think the british government acted wisely in dealing with the colonies

What is the base word of the word relationship

what is the context clue in he grabbed his lunch from kitchen table in went to school