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lianna [129]
4 years ago
5

NEED ANSWER ASAP!!!!

Mathematics
2 answers:
Zanzabum4 years ago
8 0

Answer:

The correct answer is first option

| -6   7  |

| 17   3  |

Step-by-step explanation:

It is given two  2x2 matrices we have to find the difference ,

| -4  8   |   -  | 2     1  |

| 3   12 |       |-14  15 |

To find the difference

| -4  8   |   -  | 2     1  |   =   | (-4 -2)         (8 - 1)     |

| 3   12 |       |-14  15 |       |  (3 - -14)      (12 - 15) |

 =    | -6   7  |

       | 17   3  |

Therefore the correct answer is first option

lesya692 [45]4 years ago
7 0

Answer:

1st option

Step-by-step explanation:

To find the difference of the given matrices, we just need to subtract the corresponding elements of the two matrices as shown below:

\left[\begin{array}{cc}-4&8\\3&12\end{array}\right] -\left[\begin{array}{cc}2&1\\-14&15\end{array}\right] \\\\ \\ =\left[\begin{array}{cc}-4-2&8-1\\3-(-14)&12-15\end{array}\right]\\\\ \\ =\left[\begin{array}{cc}-6&7\\17&-3\end{array}\right]

Thus, 1st option gives the correct answer

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Find the Surface Area of the following figure.<br><br> a. 64 <br> b . 32
vova2212 [387]

Answer:

64

Step-by-step explanation:

Surface area=2(wl+hl+hw)

w=4, h=4, l=2

2(4(2)+4(2)+(4)(4))

2(8+8+16)

2(16+16)

2(32)

64

7 0
3 years ago
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The measure of arc XZ is 32°.<br> What is the measure of XYZ?
Irina18 [472]

Answer:

  D. 16°

Step-by-step explanation:

An inscribed angle has half the measure of the arc it subtends.

  ∠Y = (1/2)XZ = (1/2)(32°)

  ∠Y = 16°

5 0
3 years ago
Help ASAP 2k-6-7+3k=-48
k0ka [10]

Answer:

k=-7

Step-by-step explanation:

2k-6-7+3k=-48

Combine like terms

5k -13 = -48

Add 13 to each side

5k-13+13 = -48+13

5k = -35

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7 0
3 years ago
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Simplify the expression -3 divided by -2/5.
Romashka [77]
You can either convert -3 into a fraction, or convert -2/5 into a decimal so you can solve this.
If you decide to convert -3, into a fraction, it would be -3/1, and you'd have to multiply that by the reciprocal of -2/5.
So, you'd have -3/1(-5/2)=15/2, which can be simplified to 7 1/2.
If you decide to convert -2/5 into a decimal, you would get -0.4. You would then divide -3 by -0.4, which is equal to 7.5.
Both 7.5 and 7 1/2 are correct answers, and if you were to convert 7.5 into a fraction and 7 1/2 into a decimal, you would notice that they are the same number, but in different forms.
5 0
3 years ago
7. Find the distance between the points (13, 8) and (-12, 6)
Alik [6]

9514 1404 393

Answer:

  √629 ≈ 25.08

Step-by-step explanation:

The distance formula is useful for this.

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((-12 -13)² +(6 -8)²) = √(625 +4) = √629 ≈ 25.08

The distance between the points is about 25.08 units.

3 0
2 years ago
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