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3 years ago

Last question please help me

Mathematics

1 answer:

Inessa [10]3 years ago

3 0

Answer: OPTION D

Step-by-step explanation:

The formula for calculate the surface area of a rectangular prism is:

$SA_{rp}=2(wh+lw+lh)$

Where w is the width, h is the height and l is the length.

You can see in the figure attached that:

l=3.4ft

w=3ft

h=4.1ft

Therefore, when you substitute these values into the formula you obtain that the surface area is:

$SA_{rp}=2[(3ft*4.1ft)+(3.4ft*3ft)+(3.4ft*4.1ft)]=72.88ft^{2}$

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Which of the following are the subset of ,B={1,2,3,4,5,6,7,8,9,10}.

Verdich [7]

Answer:

A, C, T

Step-by-step explanation:

A subset simply means a set of which all of its elements are contained in a larger set :

To obtain the subsets of B={1,2,3,4,5,6,7,8,9,10}.

We observe the smaller sets whose entire elements can be found in B

D={0,2,4,6,8,10,12} = not a subset of B ; B does not contain 0

A={5,6,7} = subset of B, all elements Cann be found in B

C={2} = subsets of B, 2 can be found in B

T={1,2,3,4,5,...,8} = subset of B; all elements can be found in B

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2 years ago

A publisher needs to send many books to a local book retailer and will send the books in a combination of small and large boxes.

dezoksy [38]

Answer:

20*s+30*l = 280

4*s=l

Step-by-step explanation:

Let's say that the number of small boxes is s and the number of large boxes is l. Then, 20*s equals the amount of books in small boxes (as there are 20 books per small box), and 30*l for the amount of books in large boxes. Then, we know that 4 times the amount of small boxes, s, equals l, so 4*s=l. Then, as we know that the amount of books that can be held is 280, we can add the amount of books for each type of box, or 20*s+30*l, to get 280. Our equations are as follows:

20*s+30*l = 280

4*s=l

As we can define l in terms of s, making it so that we can limit the top equation to 1 variable, we can use this to determine the number of each type of box

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3 years ago

Find all of the missing angles, #1-22. pleasssseeee helpppppp

son4ous [18]

1 = 53
2 = 115
3 = 107
4 = 73
5 = 115
6 = 66

I’ll do the rest later

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2 years ago

Mr. Seibert went on a chocolate binge and bought his favorite candy bars because they were on sale. Those 7 candy bars cost $6.2

pochemuha

It would cost him $2.67 more

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3 years ago

Read 2 more answers

Suppose researchers are concerned about the rate of residents reporting no access to health insurance in a particular community.

o-na [289]

Answer:

a) The expected number of households that will have no insurance is 2.4.

b) The standard deviation is 1.3505.

Step-by-step explanation:

For each resident, there are only two possible outcomes. Either they have health insurance, of they do not. This means that we can solve this problem using concepts of the binomial probability distribution.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected number of successes is given by:

$E(X) = np$