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3 years ago

Simplify.√54 -4√75 +3√27 -√63 +3√600

Mathematics

2 answers:

dalvyx [7]3 years ago

6 0

The answer is 53.84!!!!!

laiz [17]3 years ago

3 0

The answer than you are looking for is 53.84

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the perimeter of an equilateral triangle equals 3 times the length of one side. write a function using 2 variables for this situ

ValentinkaMS [17]

I hope this helps you

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3 years ago

Please solve these questions on the topic of exponents

galina1969 [7]

Answer/Step-by-step explanation:

Recall: $x^{-a} = \frac{1}{x^a}$

a. $4^{-3} = \frac{1}{4^3} = \frac{1}{64}$

b. $13^{-2} = \frac{1}{13^2} = \frac{1}{169}$

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3 years ago

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inna [77]

Answer:

2t+2u+2v+4w

Step-by-step explanation:

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3 years ago

If you know the density and volume of a substance, how could you find its mass?

stealth61 [152]

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4 0

3 years ago

Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer. [Start 4 By 4 Matrix 1st

Len [333]

Answer:

Yes, it is invertible

Step-by-step explanation:

We need to find in the matrix determinant is different from zero, since iif it is, that the matrix is invertible.

Let's use co-factor expansion to find the determinant of this 4x4 matrix, using the column that has more zeroes in it as the co-factor, so we reduce the number of determinant calculations for the obtained sub-matrices.We pick the first column for that since it has three zeros!

Then the determinant of this matrix becomes:

$4\,*Det\left[\begin{array}{ccc}1&4&6\\0&3&8\\0&0&1\end{array}\right] +0+0+0$

And the determinant of these 3x3 matrix is very simple because most of the cross multiplications render zero:

$Det\left[\begin{array}{ccc}1&4&6\\0&3&8\\0&0&1\end{array}\right] =1 \,(3\,*\,1-0)+4\,(0-0)+6\,(0-0)=3$

Therefore, the Det of the initial matrix is : 4 * 3 = 12

and then the matrix is invertible

4 0

3 years ago