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(3^7-1)/(3-1) = 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 ...
- Pre-calculus - 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 six-sided dice are rolled and the sum of the dots on the ...
- 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 ...
- physics - The width of the doorway is 83 cm, and the speed of sound is 343 m/s. ...

More Related Questions