Question
The 8th term of an Ap is 5 times the 3rd while the 7th term is 9 greater than the fourth. Write the first five terms of the Ap
Answers
Reiny
Simply use your definitions to translate:
"The 8th term of an Ap is 5 times the 3rd" ---> a+7d = 5(a+2d)
a+7d = 5a + 10d
-4a = 3d
a = -3d/4
"the 7th term is 9 greater than the fourth" ---> a+6d > a+3d by 9
a+6d = a+3d + 9
3d = 9
d = 3
since a = -3d/4
a = -3(3)/4 = -9/4
So the sequence is -9/4, 3/4, 15/4, 27/4, 39/4, ...
I will leave it up to you to check my arithmetic.
"The 8th term of an Ap is 5 times the 3rd" ---> a+7d = 5(a+2d)
a+7d = 5a + 10d
-4a = 3d
a = -3d/4
"the 7th term is 9 greater than the fourth" ---> a+6d > a+3d by 9
a+6d = a+3d + 9
3d = 9
d = 3
since a = -3d/4
a = -3(3)/4 = -9/4
So the sequence is -9/4, 3/4, 15/4, 27/4, 39/4, ...
I will leave it up to you to check my arithmetic.
ose
very correct
Modeckai
It's very wrong. Prove you are answers.
Brian
It is correct
Bop zaddy
Its correct๐๐๐
Safiya Bello
I really love math class.
Ayodele Isaac
Hmmm wow ๐ฎ ๐ฎ ๐ฎ
Alexis A E
I am amazed
Favour
Au is d ans in fraction
OYINDAMOLA
THANKS