Answer:
range is 15
range= high value-lower value
range =6-(-9)
range=15
B)and4
c)4
IQR=Q3-Q1
IQR=4.5-0.5
IQR=4
i think it help you
Answer:
Step-by-step explanation:
a² - b² = (a + b) (a - b)
1)x² - 36 = x² - 6² = (x + 6)(x-6)
2) 4x² - 16 = 4x² - 4*4 = 4(x² - 4)
= 4(x² -2²)
= 4(x + 4)(x-4)
3) 9x² -1 = 3²x² - 1² = (3x)² - 1²
=(3x + 1)(3x - 1)
Answer:
![x=8](https://tex.z-dn.net/?f=x%3D8)
Step-by-step explanation:
Replace triangle with x:
![8\cdot4=(x\cdot7)-(x\cdot3)](https://tex.z-dn.net/?f=8%5Ccdot4%3D%28x%5Ccdot7%29-%28x%5Ccdot3%29)
Solve:
![32=7x-3x\\32=4x\\x=8](https://tex.z-dn.net/?f=32%3D7x-3x%5C%5C32%3D4x%5C%5Cx%3D8)
So x=8
Hope this helps plz hit the crown ;D
Okay the answer is 69 because 81-2 is 69
We are given frequency distribution in the question
to find the probability distribution from frequency distribution we need to divide frequency by total number of observations.
Here, total number of observations are 6+10+7+5=28
so , we will have probability distribution table as
X 0 1 2 3
P(x) .21 .35 .25 .17
probability distributiuon describes all possible values that a random variable can take within a given range.
frequency distribution is the presentation that presents number of observation in given interval.