4 years ago

A student wrotw a variable expression n-5 for the word phrase n less than 5. explain the students error

1 answer:

3 0

Less than does mean minus, but when the question says less than some number, that number goes first. should have written 5-n

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vovikov84 [41]

The coefficient matrix is

$\begin{bmatrix}-1&-1&2\\3&2&-1\\4&4&-8\end{bmatrix}$

Its determinant is then

$\det\begin{bmatrix}-1&-1&2\\3&2&-1\\4&4&-8\end{bmatrix}=-4\det\begin{bmatrix}-1&-1&2\\3&2&-1\\-1&-1&2\end{bmatrix}$

which is equal to 0.

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4vir4ik [10]

$425-35%= $276.25
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docker41 [41]

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horsena [70]

Answer:

The answer is 8

Step-by-step explanation:

-5/2 x 8= 20 and if you add 5 it is 25.

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