*
Your company takes orders over the phone. The company's average call time is 4.6 minutes. The
graph below shows 4 calls and the difference between the call time and the company's average call
time. For these 4 calls, what is the mean difference between the call times and the company's
average call time, rounded to the nearest 0.1 minute?
*
*
(Note: A negative difference indicates the call is shorter than the average.)
*
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Difference between Call Time and
Company Average Call Time
(Negative values indicate calls shorter
than company average.
Call 3
Minutes
0.68
Call 4
Call 1
-2.32

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct