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3 years ago

Is this correct?? PLZ ANSWER

Mathematics

1 answer:

loris [4]3 years ago

6 0

Almost all correct except two. Please check corrected image.

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If any two rows of matrix are equal the determinent of the matrix is

dimaraw [331]

Answer:

Then the determinant is 0.

Step-by-step explanation:

Determinant of ( 1 2 ) = 1*2 - 2*1 = 0

( 1 2 )

4 0

3 years ago

What is the length side of a triangle that has vertices at (-5, -1), (-5, 5), and (3, -1)?

spayn [35]

Answer: 6,8 and 10

Step-by-step explanation:

To find the length , all we need to find is the distance between each point ,

the formula for calculating distance between two points is given by :

D = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

Let the points be :

A ( -5,-1)

B(-5,5)

C(3,-1)

Calculating the length AB , we have

D1 = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

D1 = $\sqrt{(-5+5)^{2}+(5+1)^{2}}$

D1 = $\sqrt{36}$

D1= 6

Calculating the length AC , we have

D2 = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

D2 = $\sqrt{(3+5)^{2}+(-1+1)^{2}}$

D2 = $\sqrt{64}$

D2 = 8

Calculating the length BC , we have

D3 = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

D3 = $\sqrt{(3+5)^{2}+(-1-5)^{2}}$

D3 = $\sqrt{100}$

D3 = 10

Therefore ,the length of the sides of the triangle are 6,8 and 10

3 0

3 years ago

Which is a greater number the mass of a cat in grams or the mass of a cat in kilograms

dem82 [27]

The mass of a cat in grams is greater because in 1 gram=0.001 kilograms

6 0

3 years ago

Someone please say the correct answer!

algol [13]

2nd, 4th, and 5th answers are correct

8 0

3 years ago

Answer please.........

kozerog [31]

I think it’s the third option

4 0

3 years ago