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Tatiana [17]
3 years ago
6

If three times a number is increased by 24, the result is 16 less than seven

Mathematics
1 answer:
Marta_Voda [28]3 years ago
6 0

Answer:

3X+24=7X-4

3X-7X=-4-24

-4X=-28

X=-28/-4

X=7 ANS.

PROOF:

3*7+24=7*7-4

21+24=49-4

45=45

Step-by-step explanation:

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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]

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2 years ago
Liz runs 8 feet per second. Katie runs 350 feet in 31 seconds. Katie runs 350 feet in 31 seconds. Stephanie runs 1 mile in 388 s
VikaD [51]

Answer: Stephanie is the fastest

Step-by-step explanation:

Here we have to find who runs faster:

Liz:

8 ft/s

Katie:

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Noah:

\frac{541 ft}{1 min}. \frac{1 min}{60 s}=9.01 ft/s

As we can see after comparing, Stephanie is the fastest, since she travels more distance in less time.

7 0
3 years ago
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