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3 years ago

Solve -12 = z ÷ 3 for z.

Mathematics

2 answers:

Tasya [4]3 years ago

6 0

Answer:

z=−36

Step-by-step explanation:

Andrew [12]3 years ago

3 0

Answer:

-4 i think

Step-by-step explanation:

divide -12 by 3 to get -4

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topjm [15]

Option C

<u>SOLUTION:</u>

We need to find the value of B - CF

First find the value CF:

$CF=\left[\begin{array}{ccc}12&0&1.5\\1&-6&7\\\end{array}\right] \left[\begin{array}{ccc}-2&0\\0&8\\2&1\end{array}\right]$

$CF=\left[\begin{array}{ccc}12(-2)+0 *0+1.5*2&12*0+0.8+1.5*1\\1*(-2)+(-6)*0+7.2&1*0+(-6)*8+7.1\\\end{array}\right]$

$CF=\left[\begin{array}{ccc}-21&1.5\\12&-41\\\end{array}\right]$

Now find value of B - CF:

$B-CF=\left[\begin{array}{ccc}2&8\\6&3\\\end{array}\right] -\left[\begin{array}{ccc}-21&1.5\\12&-41\\\end{array}\right]$

$B-CF=\left[\begin{array}{ccc}23&6.5\\-6&44\\\end{array}\right]$

∴ the value of B - CF is $\left[\begin{array}{ccc}23&6.5\\-6&44\\\end{array}\right]$

<em>I hope this helps....</em>

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3 years ago