3 years ago

Is y=8x a direct variation

Mathematics

1 answer:

dusya [7]3 years ago

6 0

Answer:

yes

Step-by-step explanation:

because it's written in the y = kx format

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Can someone help me with my homework

34kurt

Answer:

2. (X) = -7x +8

3. (V)= -1

5. (g) = -4g+28

6. (M) = 8

Step-by-step explanation:

3 0

3 years ago

If A is an n× n matrix, then det A = det AT . Verify this theorem for 2 × 2 matrices.

Bond [772]

Answer:

Verified

Step-by-step explanation:

Let A matrix be in the form of

$\left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

Then det(A) = ad - bc

Matrix A transposed would be in the form of:

$\left[\begin{array}{cc}a&c\\b&d\end{array}\right]$

Where we can also calculate its determinant:

det(AT) = ad - bc = det(A)

So the determinant of the nxn matrix is the same as its transposed version for 2x2 matrices

4 0

3 years ago

Solve each equation y-6.72=253

diamong [38]

You just need to have the variable by itself, so move the -6.72 to the other side (that will make it +6.72)
So you should have this equation now: y = 253+6.72
Then just add them and you have this: y = 259.72
And that is your answer!

Hope I helped! <3

7 0

4 years ago

Read 2 more answers

Choose what the expressions below best represent within the context of the word problem.

Nimfa-mama [501]

The number is 10x + y

4 0

3 years ago

2 3/4 - 3/7<br><br> 10 points

alexira [117]

Answer:

It only gives five points.