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3 years ago

What is the answer to 3 times 126

Mathematics

2 answers:

Jlenok [28]3 years ago

7 0

Answer:

378

Step-by-step explanation:

Leno4ka [110]3 years ago

5 0

Answer:

378

Step-by-step explanation:

3*126

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Solve the system of equations by finding the reduced row echelon form of the augmented matrix. Write the solutions for x and y i

Gwar [14]

Answer:

The solutions for the given system of equations are:

$\left \{ {{x=-5} \atop {y=12-4z}} \right.$

Step-by-step explanation:

Given the equation system:

$\left \{ {{3x+y+4z=-3} \atop {-x+y+4z=17}} \right.$

We obtain the following matrix:

$\left[\begin{array}{cccc}3&1&4&-3\\-1&1&4&17\end{array}\right]$

Step 1: Multiply the fisrt row by 1/3.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\-1&1&4&17\end{array}\right]$

Step 2: Sum the first row and the second row.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\0&\frac{4}{3} &\frac{16}{3}&16\end{array}\right]$

Step 3: Multiply the second row by 3/4.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\0&1 &4&12\end{array}\right]$

Step 4: Multiply the second row by -1/3 and sum the the first row.

$\left[\begin{array}{cccc}1&0 &0&-5\\0&1 &4&12\end{array}\right]$

The result of the reduced matrix is:

$\left \{ {{x=-5} \atop {y+4z=12}} \right.$

This is equal to:

$\left \{ {{x=-5} \atop {y=12-4z}} \right.$

These are the solutions for the system of equations in terms of z, where z can be any number.

6 0

3 years ago

1.The entry tickets at a community fair cost $5 for children and $10 for adults. On a certain day 1000 people entered in the fai

ZanzabumX [31]

Answer:

568 ADULTS

284 CHILDREN

Step-by-step explanation:

5C+10A=7100

A=2C

5C +10(2C)=7100

5C+20C=7100

25C=7100

C=284

A=2C

A=568

BRAINLIEST???

8 0

3 years ago

Mind explaining anyone?

8090 [49]

Do 45/225 and simplify and that’s your answer

7 0

3 years ago

Read 2 more answers

What is the value of y?

VARVARA [1.3K]

The value of y is 11

8 0

3 years ago

3.2 feet = ____ meters. (3.3 ft = 1 meters)

vodka [1.7K]

Answer:

0.97536

Step-by-step explanation:

Simple, really. Feet to meter conversion apps are on the web.

7 0

3 years ago