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

Which one is the following processes can occur in the absence of oxygen

expressing rational numbers with decimal expansions

A pitcher throws a baseball towards home plate. The baseball, which has a mass of 142 g, approaches the plate with 128 J of kinetic energy. Calculate the speed

When Danielle goes grocery shopping, she usually buys a gallon of milk and some dinner rolls. She has noticed that there seems to be a correlation between t

"The diameter and height of this cylinder are equal to the side length, S, of the cube in which the cylinder is inscribed. What is the expression for the cyli

the cake looked too good to eat. what is the adverb

36% of what number is 18?

which is smaller, -5 or -17?

If you needed information from someone, what type of sentence would you most likely use?

A telephone company charges a fixed monthly rate plus a rate per minute of usage. The company charges $155 for 100 minutes of usage and $245 for 200 minutes of