Answer: (x+12)(x-3)
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Answer:
Variance =9.2983, 27.6927
Standard deviation = 3.0493, 5.2624
Step-by-step explanation:
n = 20
S = 14.75
X² = chisquare
N-1 = degree of freedom
Alpha = 0.1
Alpha/2 = 0.1/2 = 0.05
1-0.1/2 = 0.95
Using statistics table
X² 19,0.05 = 30.14
X² 19, 0.95 = 10.12
A. 19(14.75)/30.14 , 19(14 75)/10.12
= 9.2983, 27.6927 for the variance of the population
B. Standard deviation = square root of variance
= √9.2983, √27.6927
= 3.0493, 5.2624
Please use attachment for better understanding
Answer:
m = 0, (2,2)
Step-by-step explanation:
(-7, 1) , m = 2
(2, 5) , m = 3
Answer:
x is equal to 12
Step-by-step explanation:
let maggie's age be x and her brother's, y
3x-7=y ~eqn 1
x+y=41 ~eqn 2
put equation 1into equation 2
x+y=41
x+ 3x-7=41
4x=41+7
4x=48
x=48/4
x= 12
Step-by-step explanation:
When w=10, 7w=7×10=70
But the given value of 7w is 73.
So, the given value is not a solution of the equation.