Hello from MrBillDoesMath!
Answer: x = -1, 12
Discussion:
I will assume the problem means to solve for x in
11/(3x) - 1/3 = -4/ (x^2)
Multiply both sides by 3
11/x - 1 = (-4 *3)/ x^2
Multiple both sides by x^2
(11/x) * x^2 - x^2 = ((-12)/ x^2) * x^2 or
11x - x^2 = -12. Rearrange to get
x^2 - 11x - 12 = 0. Factor this equation:
(x-12) (x +1) = 0
so the roots are x = -1, 12
Thank you,
MrB
You could estimate by doing 600x3=1800
(becasuse of the 0's in 600 it is easier to do 6*3=18 and then add two 0's to the end 1800)
then you simply multiple 640x3=1920
Answer:
Below in bold.
Step-by-step explanation:
A). 9.9^2 is close to 10^2 = 100
Round 1.79 to 1.8
So an estimate is 1.8 * 100
= 180.
B). √97.5 / 1.96
( I am assuming that the square root is of 97.5 only).
is approximately equal to √100 / 2
= 10/2
= 5.
Step-by-step explanation:
it starts of with 3, 5, 7 sp the pattern is increasing by 2 starting from 3