One ordered pair (a,b) satisfies the two equations ab^4 = 48 and ab = 72. What is the value of b in this ordered pair? (Note: you may have to use the Tab key to get your cursor into the middle answer box.)
One ordered pair (a,b) satisfies the two equations ab^4 = 48 and ab = 72. What is the value of b in this ordered pair?
ab4 = 48
ab = 72
ab4 48
–––– = –––
ab 72
2
b3 = –––
3
2 9
b3 = ––– • –––
3 9
18
27
cube root of 18
b = ––––––––––––––
.
