A gardener buys a plant that is 12cm in height. Each week after that the plant grows 10cm. Note: The plant is 12cm high at the beginning of the week. what is the formula and value for t10 and t12 in an arithmetic sequence????

Mathematics · High School · Mon Jan 18 2021

Answered on

We have,

a = 12 

d = 10

Now, 

t10 = a + 9d

t12 = a + 11d

So,

t10 = 12 + 9(10)

= 12 + 90

= 102

And,

t12 = 12 + 11(10)

= 12 + 110

= 122