Answer:
Step-by-step explanation:
We would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = randomly chosen values.
µ = mean
σ = standard deviation
From the information given,
µ = 9
σ = 5
1) The proportion of the population that is less than 20 is expressed as
P(x < 20)
For x = 20
z = (20 - 9)/5 = 2.2
Looking at the normal distribution table, the probability corresponding to the z score is 0.986
P(x < 20) = 0.986
2) The probability that a randomly chosen value will be greater than 6 is expressed as
P(x > 6) = 1 - P(x ≤ 6)
For x = 6
z = (6 - 9)/5 = - 0.6
Looking at the normal distribution table, the probability corresponding to the z score is 0.27
P(x > 6) = 1 - 0.27 = 0.73
Answer:
2.)70
4.)451,17
Step-by-step explanation:
2.)
a1 = 8*5 = 40
a2 = ((20-8)*5)/2 = 30
aTotal = 40+30 = 70
4.)
a1 = 18*18 = 324
a2 = (πr²)/2 = 127,17
aTotal = 127,17 + 324 = 451,17
Using the old equation, a squared + b squared = c squared. C would be your hypotenuse
so yes it is a correct right triangle
A child can explain that 3×2 represents 3 sets of 2. Concrete operational, mathematical transformations. A child doesn't sneak a cookie when his mom outside because he thinks that she can see what he sees.
Well if the diameter of the rim is 18in then the radius is 14. So if the circumference is 30in then your answer will be 44, hope this helps!!