# math

posted by .

in an AP the 10th term is 54 and 5th term is 4 times the 2nd term . Find the 1st term 'a' and common difference 'd'

• math -

a+9d = 54
a+4d = 4
5d=50

d = 10
a = -36

## Similar Questions

1. ### arithmetic

THE SUM OF THE 2ND AND 5TH TERMS OF AN A.P IS 42. IF THE DIFFERENCE BETWEEN THE 6TH AND 3RD TERM IS 12, FIND THE: COMMON DIFFERENCE, 1ST TERM, 20TH TERM.
2. ### Math

Name School Team Event 3: Logic and Reasoning (with calculators) 5th/6th grade Math Meet ‘08 For each number pattern, fill in the next five terms. (2 pts. each blank) ANSWER KEY 1st term 2nd term 3rd term 4th term 5th term 6th term …
3. ### geometric progression

the 3rd term of a gpis 10 and the 6th term is 80 find the common ratio No2 if the 2nd term of a gp is 4 and the 5th term is 1over 16,the7th term is_
4. ### math

the 3rd term of a geometric progression is nine times the 1st term.if the 2nd term is one-twenty fourth the 5th term.find the 4th term.(my solution so far).ar^2=9a r=sqr of 9 r=3.help me find the 1st term
5. ### math

The 3rd term of a geometric progression is nine times the 1st term.if the 2nd term is one twenty fourth the 5th term.find the 4th term.(there is a mistake in the 2nd to the last statement.help locate the mistake{final answer 4th term …
6. ### math

if 4th term of an arithmetic progression is 3 times the 1st term nd 7th term exceeds twice the third term by 1. find the first term and common difference
7. ### E.s groly

5 times the 5th term of arthmetic progression is equa to 10 times the 10th term. Find the common difference and the first term
8. ### Math

The 6th term of an arithmetic sequence is 3 times the 2nd term. Prove that the 10th term is twice the 5th term. tn=t1+(n-1)d
9. ### math

The 2nd and 5th term of G.P are 2/3 and 1/2 respectively.what is the 1st term,the 4th term and the 7th term
10. ### Math

In an arithmetic progression, the 5th term is six times the 1st term and the sum of the first six terms is 99. Find the 1st term and the common difference. Attempt at solution: U5 = 6(U1) 99 = 3(2[U1] + 2d)

More Similar Questions