HELP!! For a right square pyramid, which shape could not be a cross section?A. Square

B. Triangle

C. Trapezoid

D. Rectangle

Answer:

Initial value is 100

Step-by-step explanation:

A) rate of change would be dividing the number of songs wanted (100) by the number of weeks downloading (5)

100/5 = 20

 since the total quantity wanted is becoming less every week the rate of change would be negative so it becomes -20

Initial value is 100, which is the total number of songs they want

Answer:

Part A: 

initial value = 100 (total amount of songs to download)

rate of change = -20 songs/week (100-80 and so on)

Part B: 

y = -20x + 100

The MAD of set 1 is 10.5 less than the MAD of set 2.

What is MAD?

MAD is mean absolute deviation which is calculated by

MAD = ∑₁ⁿ(|x - μ|)/n

Given data of set 1 : 5,10,7,2

and set 2: 5,10,7,42

MAD of set 1 = MAD(1) =  ∑₁ⁿ(|x - μ|)/n

where μ is mean of set 1 and x are the entries of set and n is no. of entries,

μ =( 5+10+7+2)/4 =24/4 =6

now reduce the values of set 1 from mean

|x - μ| of set = 1,4,1,4

MAD(1) = ∑₁ⁿ(|x - μ|)/n = (1+4+1+4)/4 =10/4

MAD(1) = 2.5

MAD of set 2 = MAD(2) =  ∑₁ⁿ(|x - μ|)/n

calculate mean for set 2

μ =( 5+10+7+42)/4 =64/4 = 16

now reduce the values of set 2 from mean

|x - μ| of set = 11,6,9,26

MAD(2) = ∑₁ⁿ(|x - μ|)/n =(11+6+9+26 )/4 =52/4

MAD(2) = 13

MAD(2) - MAD(1)  = 13-2.5 = 10.5

Hence the set 1 is 10.5 less then set 2

Learn more about mean absolute deviation

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Answer:

the answer is C

Step-by-step explanation:

if you do 5+10+7+2 you get 24 divide by 4 you get 6 mean is 6 for set 1

Set 2 if you do 5+10+7+42 you get 64 divide by 4 and you get 16 16-10.5 you get so 5.5 set is less than set 2 there ya go dude