Directions: Simplify these problems by combining like terms.
2 answers:
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<u>Given</u>:
Given that the radius of the sphere is 9 cm
We need to determine the volume of the sphere.
<u>Volume of the sphere:</u>
Let us determine the volume of the sphere.
The volume of the sphere can be determined using the formula,
where r is the radius of the sphere.
Substituting r = 9 in the above formula, we get;
Thus, the volume of the sphere is 972π cm³
Hence, Option B is the correct answer.
Answer:
thhhhhhheeeeeeeee p.m.f of x
Answer:
You should stock 59 thousands of postcards
Step-by-step explanation:
In the standard normal distribution table, you want to find the Z with probability 0.4, which is (see figure attached) 1.28. Z is calculated as follows:
Z = (x - μ)/σ
where μ is the mean and σ is the standard deviation. Replacing with data:
1.28 = (x - 50)/7
x = 1.28*7 + 50 = 59 thousands of postcards
So, approximately 80% of the demand would be satisfied with a number of postcards between 41000 and 59000 (notice the curve is symmetrical).
