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

Speciation caused by geographic division is called A) allopatric speciation Eliminate B) genetic speciation C) parapatric speciation D) sympatric speciation

What two gases make up 99% of the Earth's atmosphere? A. Nitrogen and water vapor B. Carbon dioxide and oxygen C. Carbon dioxide and nitrogen D. Nitrogen and ox

R with center r(-1,8) and radius 5

Which is a reason why the south lost the civil war

I WILL GIVE BRAINLIEST TO THE FIRST CORRECT ANSWER!!!!!!!!!!!!! Which statement best explains how clear-cutting rainforests could make a renewable resource nonr

Read this sentence. He has fished in Manhattan’s wallet and dug out coins, but has never listened to Manhattan’s breathing, never awakened to its morning, never

How to convince someone to not kill themselves.

What was the Jacobins Club?

PLEASE HELP!!! 15 POINTS!!! —what is the area of the circle in terms of pi? A) 11 B) 22 C) 121 D) 217 -what is the measure of the central angle of the shaded s

Which of the following statements uses the additive identity? 9 + 0 = 9 9 · 0 = 0 9 + 1 = 1 + 9 (9)(1) = (1)(9)