<span>Ethan wants to arrange 4 blocks in a row
we can calculate the number of different arrangements by making calculation in following way:
4 x 3 x 2 x 1 = 24
24 different arrangement he can make.</span>
Answer: $ 12.5
Step-by-step explanation:
To find the hourly rate, divide the total cost by the total hours, that is
$50 / 4 = $12.5
$75/6 = $12.5
Shortest side= x longest side= 2x third side= 10cm+x
58cm=x+2x+10cm+x
58cm=4x+10cm
48cm=4x
12cm=x
shortest side= 12cm longest side= 24cm third side=22cm
Answer:
Step-by-step explanation:
We know that when X is normal
X-mu/sigma is std normal
Here the scores X is normal with mean =140 and sd =40
a) X=172
gives Z = 32/40 = 0.80
P(Z<0.8) = 0.5+0.2881
=0.7881
Hence 79th percentile
b) X =200 then x-mu = 60
So z=60/40 = 1.5
c) 100<x<160 means
1.5<z<0.5
d) X>190 means Z>1.25 hence proportion = P(Z>1.25) =0.5-0.3944
=0.1056
e) For 67th percentile z value = 0.0675
Hence x score = 140+0.0675(40) = 142.7
The answer is C, 150 degrees.
