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

Does adding debt increase or decrease the flexibility of a healthcare provider? Why

What is the correct definition of cholesterol? a. fats that are solid at room temperature. b. fats that are liquid at room temperature. c. fats that are soli

Nation-state is the idea that a. Everyone in the state shares the same language b. Everyone who shares the same language and culture should be united under one

Which is one clue that "Close Encounters of the Bear Kind" is a work of nonfiction? A. The article cites a particular study done in Alaska. B. The ar

Which step of mitosis involves the spindle fibers pulling the chromosomes to opposite ends of the cell?

who were the federalist?

whats the relationship beetwen diet and ostheoporosis

You find an apartment that rents for $320 per month. you are also responsible for utilities that average $80 per month. what is your likely yearly cost for this

How many times does 6 go into 87?

The volume of a balloon decreases, what happens to the air pressure within the balloon? Assume all other properties remain constant. A. It stays the same. B.