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2 years ago

15

A tank is filled with 20 litres of water. Half the water is removed and replaced with anti freece and thoroughly mixed. Half thi

s mixture is then removed and replaced with anti-freeze This process continues. find the first five terms in the sequence of amounts of water in the tank at each stage

1 answer:

mr Goodwill [35]2 years ago

7 0

Answer:

The sequence of amountof water is geometric(first term

20, commonratio

0.5) but the se-quence of antifreezeis not (a geometricsequence cannot havezero as its first termsince that would implythat all terms are zero).

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What are the values of m and n in the matrix addition below?

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The correct answer is $m=45,n=12$ .

<u>EXPLANATION</u>

We were given the matrix equation;

$\left[\begin{array}{cc}n-1&6\\-19&m+3\end{array}\right] +\left[\begin{array}{cc}-1&0\\16&-8\end{array}\right] =\left[\begin{array}{cc}10&6\\-3&40\end{array}\right]$ .

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Step-by-step explanation:

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