Answer:
c
Step-by-step explanation:
Let x be a random variable representing the price of a Congo-imported black diamond. Let the higher price be p. Then,
P(x < p) = P(x < (p - mean)/sd) = P(x < (p - 60,430)/21,958.08) = P(z < 2)
Therefore,
(p - 60,430)/21,958.08 = 2
p - 60,430 = 2 x 21,958.08 = 43,916.16
p = 34,916.16 + 60,430 = 104.346.16
Therefore, The required price is $104,346.16
Answer:
<h3>
90</h3>
Step-by-step explanation:
The middle number of three consecutive integers is thhe mean of the others, so it is one third of the sum of three consecutive integers
267:3 = <u>89 </u> - the middle number
so:
89 - 1 = 88 - the smallest number
89 + 1 =<u> 90</u> - the largest integer
<h2><u>
PROPORTIONAL EQUATION</u></h2><h3>Exercise</h3>
Apply the means-extremes property of proportions: this allows you to cross multiply:


Apply the distributive property:



Add 24 to both sides:


Substract 3x to both sides



<h3><u>Answer</u>. The value of x = 24.</h3>