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3 years ago

Find the sum of 2x2 3x - 4, 8 - 3x, and -5x2 2. -3x2 - 2 -7x2 - 2 -3x2 6 -7x2 - 6x - 2

Mathematics

1 answer:

Law Incorporation [45]3 years ago

4 0

-3x to the second power - 2

I believe this is your answer.

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Evaluate 24 + |x - 4| - y if x=2 and y= -3 Help me plz

Sonja [21]

Answer:

$\huge \boxed {29}$

Step-by-step explanation:

$24 + |x - 4| - y$

Given x = 2 and y = -3. Therefore, substitute x = 2 and y = -3 in the expression.

$24 + |2 - 4| - ( - 3) \\ 24 + | - 2| + 3$

Multiplying the negative with negative equal positive. All negative numbers in the absolute will become positive.

$24 + 2 + 3 = 24 + 5 = 29$

Therefore the answer is 29.

5 0

3 years ago

Read 2 more answers

Use the elimination method to solve the system of equations. Choose the

zvonat [6]

Answer:

x = 5

y = 7

Step-by-step explanation:

See the image that I have added to you above to get the whole working.

7 0

2 years ago

Please help if you can pic attatched

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

$CI=\left[\begin{array}{ccc}1&6&0\\0&1&2\\1&-1&3\end{array}\right] \left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]$

Subtract row 3 from row 1:

$\left[\begin{array}{ccc}1&6&0\\0&1&2\\0&7&-3\end{array}\right] \left[\begin{array}{ccc}1&0&0\\0&1&0\\1&0&-1\end{array}\right]$

Subtract row 3 from 7 times row 2:

$\left[\begin{array}{ccc}1&6&0\\0&1&2\\0&0&17\end{array}\right] \left[\begin{array}{ccc}1&0&0\\0&1&0\\-1&7&1\end{array}\right]$

Divide row 3 by 17:

$\left[\begin{array}{ccc}1&6&0\\0&1&2\\0&0&1\end{array}\right] \left[\begin{array}{ccc}1&0&0\\0&1&0\\\frac{-1}{17} &\frac{7}{17} &\frac{1}{17} \end{array}\right]$

Subtract 2 of row 3 from row 2:

$\left[\begin{array}{ccc}1&6&0\\0&1&0\\0&0&1\end{array}\right] \left[\begin{array}{ccc}1&0&0\\\frac{2}{17} &\frac{3}{17} &\frac{-2}{17} \\\frac{-1}{17} &\frac{7}{17} &\frac{1}{17} \end{array}\right]$

Subtract 6 of row 2 from row 1:

$\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right] \left[\begin{array}{ccc}\frac{5}{17}&\frac{-18}{17}&\frac{12}{17}\\\frac{2}{17} &\frac{3}{17} &\frac{-2}{17} \\\frac{-1}{17} &\frac{7}{17} &\frac{1}{17} \end{array}\right]$

$C^{-1}=\frac{1}{17} \left[\begin{array}{ccc}5&-18&12\\2&3&-2\\-1&7&1\end{array}\right]$

$C^{-1}b=\frac{1}{17} \left[\begin{array}{ccc}5&-18&12\\2&3&-2\\-1&7&1\end{array}\right]\left[\begin{array}{c}10&1&3\end{array}\right]=\left[\begin{array}{c}4&1&0\end{array}\right]$

3 0

3 years ago

How to benchmark 8/11/12 and 2/11/20

vesna_86 [32]

Number 21 would be 6 39/40

8 0

3 years ago

The security alarm on a parked car goes off and produces a frequency of 951 hz. the speed of sound is 343 m/s. as you drive towa

AVprozaik [17]

951hz divide by 343m/s = 2.77259475
times the answer by 99hz = 274.48688
to 1 d.p is 274.5m/s

7 0

2 years ago