Answer: 20
Step-by-step explanation:
Formula to find the minimum sample size(n) when prior population standard deviation
is known.
, where E = Margin of error ,
= Critical z-value for c confidence interval.
Given : E = 225 g ,
g
Critical z value for 90% confidence = 1.645
Now, 


Hence, the required minimum sample size = 20
This function is undefined. E side of you plug the values of x and y into the denominator the denominator = 0 and you cannot divide by zero
Answer: a) 92 yards, b) 29.29 yards and 672.99 sq. yd.
Step-by-step explanation:
Since we have given that
Area of square pen = 529 sq. yd
Let the length of each side be 'a'.
As we know the formula for "Area":

So, the perimeter of the square pen is given by

So, perimeter of square pen = Perimeter of round pen

So, the diameter of round pen is 
And the area of round pen is

Hence, a) 92 yards, b) 29.29 yards and 672.99 sq. yd.
Answer:
Step-by-step explanation:
well you have to use pemdas and put the letters with the numbers and stuff that is hard to explane
Answer:
<u>a₂₀ = 60</u>
Step-by-step explanation:
<u>Given :-</u>
a₃ = 9
a₈ = 24
<u>To find :-</u>
a₂₀
<u>Solving :-</u>
Expand the given values.
a + 2d = 9 -(1)
a + 7d = 24 -(2)
Now subtract (1) from (2).
=> 5d = 15
=> d = 3
a = 9 - 2d
a = 9 - 6
a = 3
<u>Final answer :-</u>
a₂₀
= a + 19d
= 3 + 19(3)
= 3+ 57
= 60
<u>a₂₀ = 60</u>