What is the 10th term in this geometric sequence?2,4, 8,16,.....

Mathematics

1 answer:

Alisiya [41]3 years ago

7 0

Answer:

1024

Step-by-step explanation:

you can plug 10 to the explicit formula. f(n)= a times r to the power of n minus 1. A is the first term, r is the common ratio and n is the nth term. 2 times 2 to the power of 10 minus 1. 2 times 2 to the power of 9 is 1024. Hope this helps!

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Evgesh-ka [11]

Answer: b = 2a

Step-by-step explanation:

Original equation

a = (1/2) b

Multiply 2 on both sides

a * 2 = (1/2) b * 2

$\Large\boxed{b=2a}$