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One ordered pair (a,b) satisfies the two equations ab^4 = 384 and a^2 b^5 = 4608. What is the value of a in this ordered pair?

 Apr 2, 2020

Best Answer 

 #1
avatar+659 
+3

Hello peepeepuupuu, your username is bad.

 

I'm not sure if this is even possible, but:

(1) ab4=384

(2) a2b5=4608

 

(2) divided by (1) is a2b5ab4=4608384

ab=12

 

Plugging back in:

b=12a

 

a(12a4)=384

12(12a3)=384

(12a)3=32

 

32a3=123

a3=54

 

a=332 I'm not sure if this is correct because I've never divided two equations before.

 Apr 2, 2020
 #1
avatar+659 
+3
Best Answer

Hello peepeepuupuu, your username is bad.

 

I'm not sure if this is even possible, but:

(1) ab4=384

(2) a2b5=4608

 

(2) divided by (1) is a2b5ab4=4608384

ab=12

 

Plugging back in:

b=12a

 

a(12a4)=384

12(12a3)=384

(12a)3=32

 

32a3=123

a3=54

 

a=332 I'm not sure if this is correct because I've never divided two equations before.

AnExtremelyLongName Apr 2, 2020
 #2
avatar+231 
0

Thanks!! It was correct though, so yay! also my sister made the username so yee

 Apr 2, 2020
 #3
avatar+659 
+1

Nice sister

 #4
avatar+105 
+2

i'm his sister! my name is actually charis but my user is matthew macdell based on a tv show character. thank you :))

matthewmacdell  Apr 2, 2020

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