Answer:
y = 1
Step-by-step explanation:
y - 3 = 7 (y - 9/7)
y - 3 = 7*y + 7*-9/7
y - 3 = 7y - 9
y - 7y = 3 - 9
-6y = -6
y = -6/-6
y = 1
probe:
1 - 3 = 7(1 - 9/7)
-2 = 7*-2/7
(x^m)^n=x^(mn)
(x^m)(x^n)=x^(m+n)
make base same
9=3^2
(3^2)^1/3=3^(2/3)
3^1/3 times 3^2/3=3^(1/3+2/3)=3^1=3
Answer:
A normal distribution has a mean of 50 and a standard deviation of 10. What is
the probability of selecting a number between 20 and 60?
