Posted by Haleemath on Tuesday, May 7, 2013 at 3:50pm.
Find the sum of the G.p.2+6+18+54+...+1458

Math  Steve, Tuesday, May 7, 2013 at 3:56pm
a = 2
r = 3
2*729 = 1458
729 = 3^6, so
S7 = 2(3^71)/(31) = 2*2186/2 = 2186

Math  Haleemath, Tuesday, May 7, 2013 at 4:39pm
Solve the equation simultaneously.1/3x+y=3,x+1/2y=4
Answer This Question
Related Questions
 Pmath sequence  How mamy geometric means are needed bdtween 2 and 1458 so that ...
 Precalculus  Hello, Consider a geometric sequence with t3= 18 and t7= 1458. ...
 maths  Find two geometric progression having: 2 as second term and 1458 as ...
 Math  The sum of 16terms oe an A.P is 504,while the sum of its 9terms is 126....
 math  Find the two numbers that multiply to the product number and add to the ...
 math  find the sum of each of the following infinite series, if no sum, write ...
 probability  two fair sixsided dice are rolled and the sum of the dots on the ...
 physics  The width of the doorway is 83 cm, and the speed of sound is 343 m/s. ...
 Precalculus  Find the sum of the first 50 terms of the sequence 2,4,6,8...
 math  there are 3 numbers, a,b and c. the sum of a and b is 15.31 , the sum of ...
More Related Questions