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NeX [460]
2 years ago
13

You are wanting a new pair of shoes. The shoes

Mathematics
1 answer:
miss Akunina [59]2 years ago
3 0

Step-by-step explanation:

$70*8% ≈ 56

so, 70 - 56 = i14

ihopethishelps

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The n candidates for a job have been ranked 1, 2, 3,…, n. Let X 5 the rank of a randomly selected candidate, so that X has pmf p
Anon25 [30]

Answer:

A. E(x) = 1/n×n(n+1)/2

B. E(x²) = 1/n

Step-by-step explanation:

The n candidates for a job have been ranked 1,2,3....n. Let x be the rank of a randomly selected candidate. Therefore, the PMF of X is given as

P(x) = {1/n, x = 1,2...n}

Therefore,

Expectation of X

E(x) = summation {xP(×)}

= summation {X×1/n}

= 1/n summation{x}

= 1/n×n(n+1)/2

= n+1/2

Thus, E(x) = 1/n×n(n+1)/2

Value of E(x²)

E(x²) = summation {x²P(×)}

= summation{x²×1/n}

= 1/n

3 0
3 years ago
An item is priced at $14.42. If the sales tax is 5%, what does the item cost including sales tax?
faltersainse [42]
I would say that the answer is D 21.63
3 0
3 years ago
A wedding at Boone Hall Plantation costs $22,200 for 120 people. How much does Boone Hall charge per guest?​
alina1380 [7]

Answer:

$185 per person

Step-by-step explanation:

22,200/120=185

8 0
3 years ago
What happens when you celebrate halloween in the spring
kirill [66]

Answer:

the day that immediately proceeds the last and final spring sabbat, ... The fact that Beltane and Samhain happen in unison twice a year lends

Step-by-step explanation:

4 0
3 years ago
A gym membership is offered in January for 29.00 per month. If you pay upfront for the year you save 20% discount. How much mone
lukranit [14]

Answer:

$69.60

Step-by-step explanation:

A gym membership is offered in January for $29.00 per month.

Monthly payment:

\$29\cdot 12=\$348

Upfront payment:

If you pay upfront for the year you save 20% discount, then you'll save 20% of $348 that is

\$348\cdot 0.2=\$69.60

8 0
3 years ago
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