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4 years ago

Help me pleaseeeeeee?

Mathematics

2 answers:

8_murik_8 [283]4 years ago

8 0

For this case we must simplify the following expression:

$4-5-2x-4y + 4-5x + 7y$

We must combine similar terms, taking into account that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the greater is placed:

$4-5 + 4-2x-5x-4y + 7y =\\3-7x + 3y$

Answer:

$3-7x + 3y$

BlackZzzverrR [31]4 years ago

6 0

Answer:

-7x+3y+3

Step-by-step explanation:

(4-5+4)=3

(-2x-5x)=-7x

(-4y+7y)=3y

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Solution

Anit [1.1K]

Answer:

28.26658805 (I included every digit in case your teacher needs you to round)

Step-by-step explanation:

In order to find x, we need to isolate x by subtracting 15^2 and taking the square root of both sides.

Thus, we have:

$15^2+x^2=32^2\\x^2=32^2-15^2\\\sqrt{x^2} =\sqrt{(32^2-15^2)} \\\sqrt{x^2}=\sqrt{799} \\x=28.26658805$

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2 years ago

720 companies 8 companies win what is the probability

Delicious77 [7]

Step-by-step explanation:

total outcomes = 720

favourable outcomes =8

=8/720

=0.01111

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3 years ago

P^2 - 8p +21 = 6<br> Solve by completing the square

djverab [1.8K]

Answer:

p = 5, p = 3

Step-by-step explanation:

<u>Given equation:</u>

p² - 8p +21 = 6

<u>Completing the square and solving for p:</u>

p² - 2*4*x + 4² + 5 = 6
(p - 4)² = 1
p - 4 = ± 1
p = 5, p = 3

6 0

3 years ago

Read 2 more answers

A 1-unit by 3-unit rectangle is shown below. what is the area of the shaded rectangle?

prisoha [69]

Answer:

3 units would be the area

8 0

3 years ago

The elements of Matrix C are shown below.

sergeinik [125]

The matrix that represents the matrix D is $\left[\begin{array}{cccc}3&1&-9&8\\2&2&0&5\\16&1&-3&11\end{array}\right]$

<h3>How to determine the matrix d?</h3>

Given the elements of the matrix C.

The matrix c is represented by its rows and columns element, and the arrangements are:

C11 = 3 C12 = 1 C13=-9 C14 = 8

C21 = 2 C22=2 C23 =0 C24 = 5

C31 = 16 C32 = 1 C33=-3 C34=11

Remove the matrix name and position

3 1 9 8

2 2 0 5

16 1 -3 11

Represent properly as a matrix:

$C = \left[\begin{array}{cccc}3&1&-9&8\\2&2&0&5\\16&1&-3&11\end{array}\right]$

Matrix C equals matrix D.

So, we have:

$D = \left[\begin{array}{cccc}3&1&-9&8\\2&2&0&5\\16&1&-3&11\end{array}\right]$

Hence, the matrix that represents matrix D is $\left[\begin{array}{cccc}3&1&-9&8\\2&2&0&5\\16&1&-3&11\end{array}\right]$