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2 years ago

Someone can help me in this questions

Mathematics

1 answer:

ehidna [41]2 years ago

3 0

All of them is 5 I hope this helps <3

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Write the equation of the line that is parallel to the line y=3x+7 and passes through the

nydimaria [60]

Answer:

Step-by-step explanation:

hello :

note :

Use the point-slope formula.

y - y_1 = m(x - x_1) when : x_1= -4 y_1= -14

m= 3 (parallel means same slope)

an equation in the point-slope form is : y +14 =3(x+4)

5 0

1 year ago

I need help ASAP due in an hour <br><br>only the highlighted ones plz:)

kolbaska11 [484]

Answer:

15.

a) 9

b) (x + 3)(x + 3) or (x + 3) ^ 2

16.

a) 121

b) (x + 11)(x + 11) or (x + 11) ^ 2

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a) 81

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2 years ago

Find the augmented matrix for each of the following systems of linear equations. (a) x₂ - 2x2 = 0 (6) x + x₃ = 1 .3x₂ + 4x2 = -1

Y_Kistochka [10]

Answer:

The augmented matrix for each set of linear equations is:

a) $x_1-2x_2=0\\3x_1+4x_2=-1\\2x_1-x_2=3$

Augmented matrix:

$\left[\begin{array}{ccc}1&-2&0\\3&4&-1\\2&-1&3\end{array}\right]$

b) $x_1+x_3=1\\-x_1+2x_2-x_3=3$

Augmented matrix:

$\left[\begin{array}{cccc}1&0&1&1\\-1&2&-1&3\end{array}\right]$

c) $x_1+x_3=1\\2x_2-x_3+x_5=2\\2x_3+x_4=3$

Augmented matrix:

$\left[\begin{array}{cccccc}1&0&1&0&0&1\\0&2&-1&0&1&2\\0&0&2&1&0&3\end{array}\right]$

d) $x_1=1\\x_2=2$

Augmented matrix:

$\left[\begin{array}{ccc}1&0&1\\0&1&2\end{array}\right]$

Step-by-step explanation:

In order to find the augmented matrix, you have to take the numeric values of each variable and make a matrix with them. For example, in the linear system a) you can make a matrix out of the numeric values accompanying x_1 and x_2, this matrix will be:

$\left[\begin{array}{cc}1&-2\\3&4\\2&-1\end{array}\right]$