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3 years ago

Solve for x. Simplify your answer as much possible

Mathematics

1 answer:

ziro4ka [17]3 years ago

8 0

The answer is 9

You divide by -2 on both sides leaving you with X=9

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Kamal wrote the augmented matrix below to represent a system of equations

ra1l [238]

Consider the operation is $R_2\to -3R_2$ .

Given:

The augmented matrix below represents a system of equations.

$\left[\left.\begin{matrix}1&0&1\\1&3&-1\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-9\\-2\end{matrix}\right]$

To find:

Matrix results from the operation $R_2\to -3R_2$ .

Step-by-step explanation:

We have,

$\left[\left.\begin{matrix}1&0&1\\1&3&-1\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-9\\-2\end{matrix}\right]$

After applying $R_2\to -3R_2$ , we get

$\left[\left.\begin{matrix}1&0&1\\-3(1)&-3(3)&-3(-1)\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-3(-9)\\-2\end{matrix}\right]$

$\left[\left.\begin{matrix}1&0&1\\-3&-9&3\\3&2&0\end{matrix}\right|\begin{matrix}-1\\27\\-2\end{matrix}\right]$

Therefore, the correct option is A.

3 0

3 years ago

the function h (x) =-16x2+200 give the height, in feet of a ball after x seconds since being dropped from a cliff consider h(3)

Ipatiy [6.2K]

Answer:

Answer is the explanation!

Step-by-step explanation:

We know that x is the amount of seconds after the ball is dropped from the cliff and h is the height after that many x seconds.

So h(x) will represent the height of the ball after x seconds.

Meaning h(3) will reprensent the height after x seconds of being drooped.

We can simply replace x with 3 to find the height of it being dropped after 3 seconds.

Hoped this helped,

JoeLouis2

8 0

3 years ago

Read 2 more answers

2a. A bicycle is $85. The tax is 6%. How much is the tax?<br> 7

iVinArrow [24]

Answer = $5.10
85 x 0.06 = $5.10

8 0

3 years ago

Consider the following equations

Liula [17]

Answer:

2) (-2,1)

Step-by-step explanation:

Solve using the substitution method -x-(x+3)=1 using this equation you would find x which is -2

Substitute -2 into the given equation, y=-2+3 y=1

Therefore, The answer is (-2,1)

It would be greatly appreciated if you gave the the brainlest

8 0

3 years ago

A set of numbers is shown: {0, 1.4, 3.2, 4, 8, 12} Which of the following shows all the numbers from the set that make the inequ

stiv31 [10]

5x + 3 $\geq$ 23
5x $\geq$ 20
x $\geq$ 4
So it can be {4, 8, 12}

If this helps, can you give me the brainliest answer? I need it...

Thank you very much.

7 0

4 years ago