carinaburcea36 carinaburcea36
  • 04-04-2020
  • Mathematics
contestada

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

Respuesta :

dannielle
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

In some markets, the government regulates the price of utilities so that they arenot priced out of the range of people's ability to pay. This is an example of a
what is -(5x-8)=3(x-2)+14​
Which statement about the Indians of North America is false? 1. Indians lacked genuine religion. 2. The idea of private property was foreign to Indians. 3. M
oraciones de frustrar
Which TWO sentences describe the demographic effects of the Agricultural Revolution? The percentage of the total population living in urban areas increased. Th
"Those who are diagnosed with schizophrenia are _____ people with depression to require hospitalization."
what does Alfred’s voice represent to the speaker?
Although the lines are blurring, the "many-to-many" media transmission function is largely the domain of ___.
34. When the top of a volcano collapses into the vent, a __________ is formed. a. crater b. neck
i hope _____ are enough decorations