carinaburcea36 carinaburcea36

04-04-2020
Mathematics

contestada

Efectuati!
(-1)+2+(-3)+4+(-5)+...+(-19)+20
Ajutati-ma, va rog!

Respuesta :

dannielle dannielle

04-04-2020

Answer:10

Step-by-step explanation:

2+4+6+.....+20- (1+3+5+7+...+19)=(2-1)+(4-3)+(6-5)+....+(20-19)=1+1+...+1 ( de 10 ori= 10 times)

=10

Answer Link

Otras preguntas

At a competition with 8 runners, 2 medals are awarded for first and second place. Each medal is different. How many ways are there to award the medals?

I'm not even gonna waste my time even nominating any teachers on this website where your actually cheating to get answers ;-;

Jean-Luc is shopping for a gift for a friend. He will need to pay an additional 7% sales tax on anything he buys. He can spend a total of $40 on the gift, inclu

Washington Monument in Baltimore Georgian Colonial Gothic Greek Roman Spanish Colonial

Mr. Garvey is almost finished working on his rectangular patio. He has ordered enough patio stones to cover an area of 600ft2. He knows that his yard is 30ft wi

Experts Link Teen Brains' Immaturity, Juvenile Crime 3. Teenagers are considered adult offenders at 18 years old. Do you think that this age should be raised, c

(2.5) . (1.4) *The dot stands for x*

Which of these scientific inventions came last? A) radios B) telephones C) cars D) computers

find inverse of f(x)= 5x+ln(x-2)

SOMEONE PLEASE HELP ME WITH THIS QUESTION ASAP AND SHOW WORK