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

How can hair be controlled during food preparation

(x^4-13x^2+36)/(2x^2+10+12)

In the diagram below, Θ is measured in radians. Which equation represents the relationship between the radius, r, and arc length, s? Circle O is shown. Line seg

What would be the most appropriate initial investigation for thyroid nodules

if the figure forms the base of a right solid 110 centimeters high, find the surface area

prove that A + ĀB = A + B using 1) boolean basic laws and 2) truth table

Which explicit formula models this situation

reason to connect to the same file several time

Nepal has high potential for producing hydroelectricity however it is difficult too. give one reason of each.

need help asap willing to give a lot of points!