2 years ago

Solve for z. -2 +4 = -4

Mathematics

1 answer:

AURORKA [14]2 years ago

7 0

Answer:

z=0

Step-by-step explanation:

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Can you please show me your math so I know how you got it?

yan [13]

So the answer is 14 ounces
Explanation
Since 16.8 is the original plus 20% we could say 16.8=120%

And since X is the original we could say X=100
So using that info we could put it into a proportion
120/100=16.8/x or
120. 16.8
——=. ———-
100. X
Then we cross multiply and divide
So,
120x=16.8(100)
120x=1680 then divide both sides by 120
X=14

7 0

2 years ago

HELPPPPPPPPPP Add & subtract matrices ..... <br><br> PLZ GIVE THE ANSWER .. THANKSSSSS .

ale4655 [162]

Answer:

$\left[\begin{array}{cc}0&-1\\-1&0\\-1&-1\end{array}\right]$

Step-by-step explanation:

In this question we have to subtract the corresponding entries of column of matrix 1 and the matrix 2 corresponding entries

$=\left[\begin{array}{cc}-1&0\\1&-2\\1&3\end{array}\right]-\left[\begin{array}{cc}-1&1\\2&-2\\2&4\end{array}\right] \\=\left[\begin{array}{cc}-1-(-1)&0-1\\1-2&-2-(-2)\\1-2&3-4\end{array}\right]\\=\left[\begin{array}{cc}-1+1&-1\\-1&-2+2\\-1&-1\end{array}\right]\\=\left[\begin{array}{cc}0&-1\\-1&0\\-1&-1\end{array}\right]$