Posted by i could not do it can u?? on Monday, February 25, 2013 at 1:28am.
a,b and c are real numbers such that ab=44, bc=112 and a+c=13. What is the value of b?

algebra  Damon, Monday, February 25, 2013 at 1:31am
a = 44/b
c = 112/b
so
44/b + 112/b = 13
156 = 13 b
b = 12

algebra  Calvin Lin, Tuesday, February 26, 2013 at 8:49pm
This is a problem posted by Brilliant (dot) org, which provides weekly problem sets for students to work on independently.
Please refrain from posting your solution for this student to copy.
Calvin Lin
Brilliant Challenge Master
Answer This Question
Related Questions
 algebra  a,b and c are real numbers such that ab=44, bc=112 and a+c=13. What is...
 algebra  Let a, b and c be real numbers such that a^2 + ab + b^2 = 9 b^2 + bc...
 algebra 1  If a and b are any real numbers such that 0<a<1<b, which of...
 Algebra  What is the smallest integer value of c such that the function f(x)=x^...
 adv algebra hw  Let x,y,z be positive real numbers such that: xyz=945 x(y+1)+y(...
 Math (Algebra)  A and B are real numbers such that the two quadratic equations ...
 Linear Algebra  Let vector 'v' = (1,1) and vector 'w' = (1,1). a)Find real ...
 Math (algebra)  Let x and y be real numbers satisfying 4x^2+5y^2=1. Over all ...
 Real Analysis  Let a be a real number and let m, n be natural numbers such that...
 Algebra 2  3. Identify the vertex and the axis of symmetry of the graph of the ...
More Related Questions