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2 years ago

List four wan technologies that are carried over the pstn.

1 answer:

8 0

There is actually a lot of wan technologies that are carried over the pstn. But the first thing we have to do, is to know what does the pstn means. The pstn means Public Switched Telephone Network. Though they have some similarities, the atm and the wan are different machines.

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Which of the following represents procurement as part of the support value activities in a value chain analysis?

ArbitrLikvidat [17]

Answer:

E. Purchasing inputs such as raw materials, resources, equipment and supplies

Explanation:

In business, Procurement is the process of acquiring goods/services in order to support operational activities.

It includes all the aspects related to a purchase: price ( estimates, biddings ) , payment terms, good specifications, quality, delivery, volumes, etc.

8 0

3 years ago

Let $S$ be the set of complex numbers of the form $a + bi,$ where $a$ and $b$ are integers. We say that $z \in S$ is a unit if t

lakkis [162]

Answer:

Number of units possible in S are 4.

Explanation:

Given S is a set of complex number of the form $a+bi$ where a and b are integers.

$z\in S$ is a unit if $w\in z$ exists such that $zw=1$ .

To find:

Number of units possible = ?

Solution:

Given that:

$zw = 1$

Taking modulus both sides:

$|zw| = |1|$

Using the property that modulus of product of two complex numbers is equal to their individual modulus multiplied.

i.e.

$|z_1z_2|=|z_1|.|z_2|$

So,

$|zw| = |1|\\\Rightarrow |zw| =|z|.|w| =1\\\Rightarrow |z|=\dfrac{1}{|w|}$ ......... (1)

Let $z=a+bi$

Then modulus of z is $|z| = \sqrt{a^2+b^2}$

Given that a and b are integers, so the equation (1) can be true only when $|z| = |w| =1$ (Reciprocal of 1 is 1). Modulus can be equal only when one of the following is satisfied:

(a = 1, b = 0) , (a = -1, b = 0), (a = 0, b = 1) OR (a = 0, b = -1)

So, the possible complex numbers can be:

$1.\ 1 + 0i = 1\\2.\ -1 + 0i = -1\\3.\ 0+ 1i = i\\4.\ 0 -1i = -i$

Hence, number of units possible in S are 4.

6 0

3 years ago

On December 31, 2020, McDaniel Company had $1,200,000 of short-term debt in the form of notes payable due February 2, 2021. On J

o-na [289]

Answer and Explanation:

The preparation is presented below:

McDaniel Company

Partial balance sheet

Particulars Amount

Current liabilities

Note payable $250,000

Long term debt

Note payable refinance $950,000

Total liabilities $1,200,000

We simply added the long term debt and the current liabilities so that the total liabilities could come

8 0

3 years ago

A resort hotel is planning to install a computerized inventory system to manage complementary guest items such as soap and shamp

jeka57 [31]

Answer:

a) safety stock = z-score x √lead time x standard deviation of demand

z-score for 99.9% = 3.29053

√lead time = √7 = 2.6458

standard deviation of demand = 3

safety stock = 3.29053 x 2.6458 x 3 = 26.12 ≈ 26 soaps

reorder point = lead time demand + safety stock = (7 x 16) + 26 = 138 soaps

EOQ = √[(2 x S x D) / H]

S = order cost = $10

D = annual demand = 16 x 365 = 5,840

H = $0.05

EOQ = √[(2 x $10 x 5,840) / $0.05] = 1,528.40 ≈ 1,528 soaps

b) total order costs per year = (5,840 / 1,528) x $10 = $38.22

total holding costs = (1,528 / 2) x $0.05 = $38.20

total annual ordering and holding costs = $76.42

4 0

2 years ago

When it comes to credit cards, what does prepaid mean?

stiv31 [10]

prepaid means already paid

8 0

2 years ago