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RUDIKE [14]
3 years ago
15

If G is a 3 x 4 matrix and H is a 4 x 3 matrix, what is the dimension of GH?

Mathematics
1 answer:
Marat540 [252]3 years ago
5 0
The dimension of gh is 12
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How to decompose a parallelogram and rearrange the parts to form a rectangle is.
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3 0
3 years ago
Solve each system by substitution.<br> y = 2x + 5<br> 3x - y= -6
castortr0y [4]
X=-1 and y=3

To solve this, because y is equal to 2x+5, you can substitute 2x+5 into the bottom equation for y.

You now have 3x - (2x + 5) =-6

This can be solved like a normal equation. Multiply each term in the parenthesis by -1.

3x - 2x - 5 = -6

Subtract 2x from 3x

x - 5 = -6

Add 5 to both sides

x=-1

Now you can solve for y by plugging -1 in for x in either equation. Im going to use the top one.

y= 2(-1)+5
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You can check your answer by plugging in the values for x and y into both equations and making sure both sides equal each other.
7 0
3 years ago
if A= (-1, -3) and B= (11, -8) what is the length of AB A) 14 units B) 11 units C) 13 units D) 12 units
Anastasy [175]
Distance is the formula : 

DAB = \sqrt{(xA - xB)^2  + (yA - yB)^2}
 
so 

\sqrt{(-1 - 11)^2 + (-3 + 8)^2}

= 13 

Answer is C)


5 0
3 years ago
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