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larisa86 [58]
3 years ago
13

A shipping company handles containers in three different sizes:

Mathematics
1 answer:
Lynna [10]3 years ago
6 0

Answer:

Step-by-step explanation:

Hello!

To know what will be the resulting E(X) and V(X) of the total volume shipped, you have to add the three variables.

According to the properties of the E(X) The expected value of two variables or more independent variables is equal to the addition of the expected values of each variable: X+Y⇒ E(X+Y)= E(X) + E(Y)

In this case:

E(X₁+X₂+X₃)= E(X₁)+E(X₂)+E(X₃)= 200 + 240 + 120= 560 ft³

The same happens with the variance, if you add two independent variables, the variance of the resulting variable will be equal to the addition of the variance of each variable: X+Y ⇒ V(X+Y)= V(X)+V(Y)

In this case:

V(X₁+X₂+X₃)= V(X₁)+V(X₂)+V(X₃)= 10+13+8= 31

I hope it helps!

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Assume that your present job pays a monthly gross salary of $1,560. You are offered a new position that pays $8.60 per hour with
motikmotik

Answer:

There are 4 weeks in a month and 40 working hours in a week

Since the $8.60 per hour, the gross monthly salary for your new position = 8.60*40*4 = $1,376

Your gross monthly salary at present job = $1,560

So the additional amount that you need to earn at your new position = 1,560-1,376 = $184

The hourly wage for addtional hours more than 40 hours at the new position = 1 1/2 * 8.60 = 1.5*8.60 = $12.90

So, number of hours that you need to work extra = 184/12.90 = 14.26 hours per month

So, number of hours that you need to work extra per week = 14.26/4 =  3.566 hours or 3.57 hours (Rounded to 2 decimals)

Step-by-step explanation:

4 0
3 years ago
1. Which represents the type of sequence: -99, -96, -92, -87, -81, …?
Juli2301 [7.4K]
So here are the answers for the given questions above:
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2. The correct answer for this problem would be option C. <span>121,520.
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8 0
3 years ago
Simplify - (x + 2) +-3
bekas [8.4K]
Answer : -x-5
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7 0
3 years ago
Read 2 more answers
465 how can you find the 1 places?
Kisachek [45]

to find the first places you have to look at the ones tens and hundreds so the first place is in the ones place

I hope this helps

7 0
3 years ago
Two concentric circles with different radii share how many common tangent lines?
Dominik [7]
The answer is a.0

Concentric means these circles would have the same center, thus, the smaller circle must be inside the bigger circle. Any tangent line to the smaller circle wont be a tangent line to the bigger circle, since that tangent line would intersect at the bigger circle at 2 points. Any tangent line to the big circle will not touch the small circle... so the answer would be 0.
7 0
4 years ago
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