Ask a New Question
Search
Asked by
David
The 4th and 7th terms of GP are 16 and 2 respectively.Find; a)the first term b)the common ratio c)the sum of the first 3 terms.
Answers
Answers
Answered by
oobleck
r^3 = 2/16 = 1/8
r = 1/2
a(1/2)^3 = 16, so a = 128
S3 = 128 (1 - 1/8)/(1 - 1/2) = 224
check: 128+64+32 = 224
Related Questions
Related
The first terms of a G¤P is 7 while the common ratio is 3 find the 11 term
write the next terms two terms in the pattern 42, 49 39,46 <---- 38, 45 40, 48 I cant t...
How many terms has the AP whose first term is 57 given that the common difference is 3
Which of the following terms described the writer's attitude toward his or her subject ?
How many terms are there in the geometric progression 2, 4, 8...,128?
1 Which of the following terms is used to describe the rewards earned by or given to a player as pos...
Key terms: Expression Terms Factors Coefficients Meaning - definition - picture - Example with...
identify the terms, like terms, coefficients, and constant terms. Then, simplify the expression: 8c...
like terms: terms consistising of the same ______________, raised to the same ________________.