27.5
put the numbers in order
find median (134.5)
find lower quartile (121)
upper quartile (148.5)
subtract upper from lower to get 27.5
Answer:
200 teddy bears
Step-by-step explanation:
D : TB
6 : 5
Let the total number of dolls be 6x and the total number of teddy bears be 5x.
6x = 240
5x = 
× 240
= 200 teddy bears
Answer
X=3 or X= -3
-3x^2+27=0
-3x^2= -27
X^2=9
+-squareroot of 9
The percentage change from 339 to 420 is 21.34387%
Answer:
f(x) = [x – (4 + √20)][x – (4 – √20]
Step-by-step explanation:
In order to know the function that best describes the given f(x) that best reveals it's minimum or maximum, we need to know solve for x.
x² – 8x – 4 = 0
Using completing the square method
x² – 8x = 4
x² – 8x + 4² = 4 + 4²
(x – 4)² = 20
x = 4 ±√20
Therefore
f(x) = [x – (4 + √20)][x – (4 – √20]
