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OLEGan [10]
2 years ago
15

Explain why this matrix equation has no solution: A + 11 17 −8 13 = 0 0 0 0

Mathematics
2 answers:
Gnoma [55]2 years ago
8 0

If you mean

A+\left[\begin{array}{cccc}11&17&-8&13\end{array}\right]=\left[\begin{array}{cccc}0&0&0&0\end{array}\right]

there is a solution and it is the opposite of the matrix constant on the left.

A=\left[\begin{array}{cccc}-11&-17&8&-13\end{array}\right]

Adding anything with its opposite gives zero.

yulyashka [42]2 years ago
5 0

Answer:

Sample Response – The two matrices are different sizes. It is not possible to add matrices with different sizes.


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Which sequence of transformations produces an image that is not congruent to the original figure? A. A translation of 4 units to
Nataliya [291]

The <em>correct answer</em> is:


A) A translation of 4 units to the right followed by a dilation of 2.


Explanation:


3 of our transformations are called isometries. These are transformations that preserve the size and shape of the original figure; they just change the position or orientation of it. Translations, reflections and rotations are all isometries. We know that isometries preserve congruence, since they maintain the size and shape of the original figure.


A dilation is not an isometry. This is because a dilation changes the size of a figure. Since the new figure will not be the same size as the original, they will not be congruent.

4 0
2 years ago
Read 2 more answers
The staff at a company went from 40 to 29 employees. what is the percent decrease in staff
topjm [15]
Number of employees outside of company=40-29=11

we can calculate the percent decrease in staff by the rule of 3

40 employees-----------------100%
11 employees----------------   x

x=(11 employees*100%) / 40 employees=27.5%

The percent decrease in staff was: 27.5%
5 0
2 years ago
7) CJ was painting his apartment. In 15 minutes,
igomit [66]

y = 12x represents the gallons of paint used in x hours.

Step-by-step explanation:

CJ uses 3 gallons of paint in 15 minutes,

15 minutes = 3 gallons

1 minutes = \frac{3}{15} = \frac{1}{5} \ gallons\\

1 hour = 60 minutes

Gallons of paint used in 1 hour;

1 hour = \frac{1}{5}*60=12\ gallons

CJ uses 12 gallons of paint in 1 hour.

For x hours = 12*x = 12x

Gallons of paints used = y

y = 12x represents the gallons of paint used in x hours.

Keywords: linear equation, multiplication

Learn more about multiplication at:

  • brainly.com/question/10048445
  • brainly.com/question/10177389

#LearnwithBrainly

5 0
2 years ago
Amanda can proofread 17 reports in an hour, while Sally can proofread 28 reports in an hour. If they have 420 reports to proofre
mafiozo [28]

Answer:

9 hours and 20 minutes.

Step-by-step explanation:

In one hour, Amanda can proofread 17 reports.

In one hour, Sally can proofread 28 reports.

That means together, they can proofread 45 reports in one hour.

So we need to divide the total amount of reports by how much they can read in an hour:

420/45 = 28/3 = 9 1/3

The time it takes between the two of them is 9 hours and 20 minutes.

8 0
2 years ago
Read 2 more answers
According to government​ data, the probability that an adult was never in a museum is 10​%. In a random survey of 60 ​adults, wh
lutik1710 [3]

Answer:

\text{Mean}=)=6\\\\\text{Standard deviation}=2.324

Step-by-step explanation:

Given : The probability that an adult was never in a museum is : p=0.10

The number of adults randomly surveyed: n = 60

In Binomial distribution , the formula to find the mean and the standard deviation is given by :-

\text{Mean}=np\\\\\text{Standard deviation}=\sqrt{np(1-p)}

Then , the mean and standard deviation of the number that were never in a​ museum will be :-

\text{Mean}=60(0.10)=6\\\\\text{Standard deviation}=\sqrt{60(0.10)(1-0.1)}=2.3237900077\approx2.324

5 0
2 years ago
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