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Naily [24]
2 years ago
7

A computer store decides to increase the prices of all the items it sells by 15%. The store manager uses matrices to prepare the

new price list. Matrix A contains the unit price of each product in each category. Matrix B contains the revised price of each item in each category. How can the manager obtain the entries for Matrix B?
Mathematics
1 answer:
Nitella [24]2 years ago
4 0
The manager could perform scalar multiplication on Matrix A, using the scalar 1.15.

Increasing the price by 15% would mean we are taking 100% of the value + another 15%; 100+15 = 115%; 115% = 115/100 = 1.15.

Multiplying every value in Matrix A by 1.15 will give the price raised by 15%.
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Answer:

a) 0.1829

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Step-by-step explanation:

We are given the following information:

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Then the number of adults follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

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Now, we are given n = 10

a) exactly 5

P(x =5)\\\\=\binom{10}{5}(0.62)^5(1-0.62)^5\\\\=0.1829

0.1829 is the probability that exactly 5 out of 10 U.S.adults have very little confidence in newspapers.

b) atleast six

P(x \geq 6)\\\\ = P(x = 6) + P(x = 7)+P(x = 8)+P(x = 9)+P(x=10)\\\\= \displaystyle\sum \binom{10}{n}(0.62)^n(1-0.62)^{10-n}, n =6,7,8,9,10\\\\= 0.6823

0.6823 is the probability that atleast 6 out of 10 U.S. adults have very little confidence in newspapers.

c) less than four

P(x

0.0413 is the probability that less than 4 out of 10 U.S. adults have very little confidence in newspapers.

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Bethanie recently used her cell phone to deposit a check. This is considered to be what type of electronic banking service?
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jonny [76]

Given parameters:

Bearing of the tree from the house  = 295°

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To find the back bearing in this regard, simple deduct the forward bearing from 360°;

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Answer:

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Step-by-step explanation:

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