marissa946 marissa946

04-05-2020
Mathematics

contestada

The common ratio of a geometric series is 1/4 and the sum of the first 4 terms is 170. what is the first term of the series?

Respuesta :

MathPhys MathPhys

04-05-2020

Answer:

128

Step-by-step explanation:

The sum of the first n terms of a geometric sequence is:

S = a₁ (1 − r^n) / (1 − r)

170 = a₁ (1 − ¼^4) / (1 − ¼)

a₁ = 128

Answer Link

Otras preguntas

2) Next week, she is going to take her favorite jeans on holidays. 3) This year, we are going to take some sunglasses and a good book on holidays. 4) Next summe

50/22 as a decimal rounded to the nearest hundreth

Please help me answer this question

8 the probability that a biased coin lands on heads is 0.47 13 the probability that a biased dice lands on an even number is 20 samira flips the coin and rolls

Which two protests evolved from symbolic relationships of organism which resulted in eukaryotic organisms chloroplast

HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP

(x - 4)/(x + 6) - (x - 6)/(x + 4)

Using a table of standard electrode potentials, label each of the following statements as completely true or false. A) Cu²+ can oxidize H2, and Fe can reduce Mn

Express 5.5° as a fraction. .

Find m angle angle KML