kagetama kagetama

24-11-2020
Mathematics

contestada

In an arithmetic sequence, the 7th term is 30, and the 11th term is 60. What is the 21st term of this sequence?

Respuesta :

abdulgafaryusuf9 abdulgafaryusuf9

24-11-2020

Answer:

135

Step-by-step explanation:

7th term ;a + 6d = 30

11th term; a + 10d = 60

solving simultaneously,a= -15 ,d= 7.5

21st term = a + 20d= 135

Answer Link

Otras preguntas

How did the invention of the cotton gin affect the demand for labor to grow and harvest cotton?

Researchers in a local area found that the population of rabbits with an initial population of 20 grew continuously at the rate of 5% per month the fox populati

Choose one of the following natural disasters. You may choose one that might occur in your community. Then, using the three parts of an emergency preparedness p

each lap around a park is 0.58 mile .jessica walked 3.25 laps around the park. how many miles did jessica walk around the park

How did many colonies resist colonial rule? Check all that apply.

In humans, an egg develops into a male offspring if it

HELP ASAP! WILL GIVE BRAINLIEST AND 20 POINTS!

2 advantages of bonds for their issuers?

what is -1/6 + 7/12

Where did the Mexican movement get their inspiration