Solve. - 7 1/2 ÷ ( 4 1/2 - 5 1/8 ) = ?
2 answers:
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Answer:
120 + 20π
Step-by-step explanation:
Find the image of the question attached.
For the square;
Perimeter of a square = 4L
L is the side length of the square
From the diagram, L = 10
Perimeter of a square = 4(10) = 40
Perimeter of 3 squares = 3(40) = 120
For the semicircles:
Perimeter of a semicircle = 2πr/2 = πr
From the diagram;
L = radius of the semicircle = 10
Perimeter of a semicircle = π(10)
Perimeter of a semicircle = 10π
Perimeter of the two semicircles = 2(10π) = 20π
perimeter of the shape = perimeter of 3squares + 2 semicircles
perimeter of the shape = 120 + 20π
Answer:
a) In the explanation.
b) P=0.09714
c) P=0.0866
d) p=0.208
Step-by-step explanation:
a) The sampling distribution will have this properties:
1 - The sampling distribution of a proportion is equal to the binomial distribution.
2 - The mean of the sampling distribution will be equal to the proportion of the population (0.328).
3 - The standard deviation will be equal to the square root of the product of the proportion and its complementary, divided by the sample size.
B) The fraction with sample proportion of 0.45 or higher is
C) The fraction with sample proportion of 0.20 or lower is
D) The value of p that cuts off the lower 10% of the distribution corresponds to z=-1.28.
Then we have