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Question 5 of 18

How much storage space does your music use? Below is a dotplot of the file sizes (to the nearest tenth of a megabyte) for 18

randomly selected files on Nathaniel's mp3 player. The distribution of file size has a mean of x = 3.2 megabytes and a

standard deviation of sx = 1.9 megabytes.

S

6

7

8

4

File size (mb)

What is the interquartile range of the file size distribution

show in the dotplot?

4.2 mb

O 1.2 mb to 7.5 mb

O 2.8 mb

O 1.9 mb to 4.7 mb

6.3 mb

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(?

11:36 AM

9/23/2020

O

BI

75%

step-by-step explanation:

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.

answer: plz mark me brainliest

7 hours, 0 minutes, 0 seconds

or:  

0.04

total weeks

or:  

0.29

total days

or:  

7.00

total hours

or:  

420.00

total minutes

or:  

25,200.00

total seconds

step-by-step explanation:

the absolute value function