Scrutinize
Junior Member
- Joined
- Sep 16, 2019
- Messages
- 52
a, b,c,d are all consecutive numbers in a geometric sequence ( as in ) a1,a2,a3,a4 respectively.
a*d=24
b^3 + c^3=288
What is a + b?
I got a = 6 and d = 4 and a+d was equal to 10. I don't remember how I did the question exactly but I just wanted to see if I got the right answer? What I do remember doing was I substituted each b c d with a's multiplied by q. Then I got a*a*q^3=24 or a^2*q^3=24 and I substituted it into the b's and c's and got a from that because I was able to cancel out the q's for a's I'm pretty sure. Either way I wanna see if I got the right answer and also want to know how to do the problem again so any help would be amazing.
Thanks in advance!
PS: This was one of my test questions that I completed today so trying to check my answers.
a*d=24
b^3 + c^3=288
What is a + b?
I got a = 6 and d = 4 and a+d was equal to 10. I don't remember how I did the question exactly but I just wanted to see if I got the right answer? What I do remember doing was I substituted each b c d with a's multiplied by q. Then I got a*a*q^3=24 or a^2*q^3=24 and I substituted it into the b's and c's and got a from that because I was able to cancel out the q's for a's I'm pretty sure. Either way I wanna see if I got the right answer and also want to know how to do the problem again so any help would be amazing.
Thanks in advance!
PS: This was one of my test questions that I completed today so trying to check my answers.