Sunday

March 29, 2015

March 29, 2015

Posted by **Babueddie** on Friday, January 20, 2012 at 7:41pm.

- math -
**Reiny**, Friday, January 20, 2012 at 10:51pma+12d = 27 , (#1)

a+6d = 3(a+d)

a+6d = 3a + 3d

3d = 2a

then 12d = 8a

in a+12d = 27

a + 8a = 27

9a = 27

a = 3

first term is 3

**Answer this Question**

**Related Questions**

maths - The thirteenth term of an arithmetic progrssion os 27 and the seventh ...

maths - The thirteenth term of an arithmetic progrssion os 27 and the seventh ...

Math - 3,5,-5... The first term in the sequence of #'s shown above is 3. Each ...

math - the fourth term of an arithmetic progression is equal to 3 times the ...

Math - The fifth term of an arithmetic progression is three times the second ...

math - The 3rd term of a geometric progression is nine times the first term.if ...

math - The third term of a geometric progressiom is nine times the first term.if...

Arithmetic Sequence - Given the third term of an arithmetic sequence less than ...

Maths - The 3rd term of an AP is 10 more than the first term while the fifth ...

Math - A G.p is such that the 3rd term is 9 times the first term, while the ...