rebekahrocha75 rebekahrocha75

09-02-2017
Mathematics

contestada

If −20 is the 15th term in an arithmetic sequence with a common difference of −7, what is the first term in the sequence?

Respuesta :

warblitz warblitz

09-02-2017

An=A1+(n-1)d
-20=A1+(15-1)x-7
-20=A1+14 x -7
-20=A1-98
+98 +98
-98+98=0
-20+98=78
A1=78

Answer Link

Otras preguntas

In Mexico, the expression Porfiriato refers to A. the revolution of 1911 that overthrew Diaz. B. any kind of authoritarian political oppression. C. the oppre

U.S. Groups of the Late 1700s and Early 1800s Women Children Indentured Servents Native Americans African American Working Class Which statement best summarizes

You make $ 304 a day on a job. What will you receive for working frac(1,16) of the day?

What are the 4 forms of tobacco

How did most colonists feel about helping the British? Please can you explain it to me.

Characterization is the process of conveying information about a character. true or false

the big town football team outscored its opponents 5:2 last season. if their opponents scored 38 points, how many points did big town score?

what is the lend-lease act?

What is the major atom in methane that contributes to climate change

The period of Tokugawa rule from 1603 to 1868 was one of relative peace. Which of the following was a method used by the Tokugawa to control its enemies? A. Lan