natashagarlick natashagarlick

22-10-2020
Mathematics

contestada

In an arithmetic sequence, the first term is -8 and the sun of the first 20 term is 790. Find the common difference

Respuesta :

anjumunnisa78 anjumunnisa78

22-10-2020

Answer:

a=-8,s20=790

Step-by-step explanation:

s20=10[-16+19xd]

790/10=-16+19d

79+16=19d

85=19d

d=85/19=5

Answer Link

Otras preguntas

which statement is true?A).Eukaryotic cells have multiple membranes.B).Prokaryotic cells do not have a membrane.C).Prokaryotic cells have multiple membranes.D).

consider the functions f(x)=2x+1 and g(x)=x^2-10. what is the value of f[g(3)]

Regina can type an average of 40 words per minute. If one page has 500 words, how long will it take her to type 20 pages?

the reconstruction act, allowed blacks to vote and hold political office. is one way government attempted to give blacks the rights of full citizenship ! Please

How is sigma notation used to evaluate a series?

Examine this painting which depicts the scene from the first half of Antigone in which Antigone comes upon her brother Polyneices. How does the picture add dept

2m = 1 + m what do I need to do to solve this problem

Karla is training for a marathon, she can run 2 miles in 16 minutes. if she runs at that pace the whole race, how long will it take her to run the entire 26 mil

How does a change in the value of h effect the axis of symmetry of the graph ? How does the value of k change the axis of symmetry ? I really need to know this

A piece of lithium metal is added to a beaker that contains water and phenolphthalein. Using what you know about the properties of bases, choose the best explan