Posted by Henry on Thursday, February 28, 2013 at 9:37am.
Compute the following
7/2 x 9^3/2 + 3/2 x 9^5/2 + 14
7/2 is a negative fraction.
the entire fractions are multiplied by 9 raised to their respective exponents. I can't figure this out. Please help?

Math  Steve, Thursday, February 28, 2013 at 10:47am
Since 9 = 3^2, 9^1/2 = 3
7/2 * 9^3/2 = (7/2) / (9^3/2) = 7/(2*3^3)
3/2 * 9^5/2 = (3/2) / (9^5/2) = (3/2) / 3^5 = 1/(2*3^4)
So, now we have
7/(2*3^3) + 1/(2*3^4) + 14
= (7*3 + 1 + 14*2*3^4)/(2*3^4)
= 2248/162
= 1124/81
Answer This Question
Related Questions
 algebra  Simplify. Do not use negative exponents in the answer. 12x2y4 3xy7 ...
 Algebra I math  Which statement best demonstrates why the following is a non...
 algebra  need help please!!!!! (fraction) _____1____ 9x^2 y^1 I'm not exactly...
 Algebra 1  Which statement best demonstrates why the following is a nonexample...
 MAT115  which pair of fractions is proportional A)0.8/0.4=3.2/2 B)0.6/0.3=0.9/0...
 math  please help me figure out how to do thes problems 4. y/2+5=12 6. x/39=0...
 algebra  Simplify. Do not use negative exponents in the answer. 25a^2/10b^4 ...
 algebra  Simplify using only positive exponents. (2r^1s^2t^0)^2...
 Math  Reducing fractions how can I figure out the reduced fraction for 20/10?
 math help please  if you divide this number by 2 you will get 3 multiplied by 6...
More Related Questions