Question

9x/x^2-4 when x = 1/2 The computer keeps getting -6/5 and I have NO idea how they are getting this answer.

Answer 1

subtitute value of 'x=1/2' in equation
ans= -6/5

Answer 2

I did substitute but for some reason keep getting the wrong answer

Answer 3

I'm getting 4.5/-3.75

Answer 4

One method is to evaluate 4.5/-3.75 with a calculator to get 4.5/-3.75 = -1.2

Then convert that decimal into a fraction

-1.2 = -(1 + 0.2)

-1.2 = -(1 + 2/10)

-1.2 = -(10/10 + 2/10)

-1.2 = -(10+2)/10

-1.2 = -12/10

-1.2 = -6/5

Answer 5

(9)(1/2) / (1/2)^2 -4
(9/2) / (1/4 - 4)
(9/2) / (1-16 /4)
9 x 4 / 2 x (-15)
cancellations:
9x2 / (-15)
18 / -15
cancellations:
6 / -5
or -6/5

Answer 6

Thank you!

Answer 7

now answer this:
a sequence of numbers begin with the numbers -10, 20, 30,..., and each term afterward is the product of the preceding three terms. how many of the first 101 terms of this sequence are positive?

Answer 8

plz