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stich3 [128]
3 years ago
9

I NEED HELP ASAP

Mathematics
1 answer:
alexandr402 [8]3 years ago
6 0
9(6j+8+1j)
9(6j)+9(8)+9(1j)
54j+72+9j
63j+72
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What is the equation of the line that passes through the point (8,−4) and has a slope of 1/2
jeka57 [31]

Answer:

y=1/2x+8

Step-by-step explanation:

-4=1/2*8+b

-4=4+b

b=4+4

b=8

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Solve x - 9 = 3 + y for y.
Mila [183]

Step-by-step explanation:

x - 9 - 3 = y \\ y = x - 12

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How do u round decimals like 18.194 rounded to the nearest hundred
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5 0
3 years ago
Work out the area of this quarter circle of radius 8cm, Give you answer in terms of pi
oee [108]

Answer:

The area of the quarter circle is 16\pi\ cm^{2}

Step-by-step explanation:

we know that

The area of a quarter circle is equal to

A=\frac{1}{4}\pi r^{2}

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r=8\ cm

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3 0
3 years ago
Help me Please....................
MakcuM [25]

9514 1404 393

Answer:

  1.3363

Step-by-step explanation:

The basic idea here is to find an expression for the direction vector between a point on L1 and a point on L2. Then, solve for the points on L1 and L2 that make that vector perpendicular to both lines L1 and L2. (The dot product of direction vectors is zero.) The distance between the points found is the shortest distance between the lines.

__

Let P be a point on L1. Then the parametric equation for P is ...

  P = (6t, 0, -t) . . . . . . origin + t × direction vector

Let Q be a point on L2. The direction vector for L2 is given by the difference between the given points. It is (4-1, 1-(-1), 6-1) = (3, 2, 5). Then the parametric equation for Q is ...

  Q = (3s+1, 2s-1, 5s+1) . . . . (1, -1, 1) + s × direction vector

The direction vector for PQ is ...

  Q -P = (3s+1-6t, 2s-1, 5s+1+t)

The dot product of this and the two lines' direction vectors will be zero:

  (3s+1-6t, 2s-1, 5s+1+t)·(6, 0, -1) = 0 = 13s -37t +5 . . . perpendicular to L1

  (3s+1-6t, 2s-1, 5s+1+t)·(3, 2, 5) = 0 = 38s -13t +6 . . . perpendicular to L2

The solution to these equations is ...

  s = -157/1237

  t = 112/1237

Then (Q-P) becomes (94, -1551, 564)/1237, and its length is ...

  |PQ| = √(94² +1551² +564²)/1237 ≈ 1.3363

The distance between the two lines is about 1.3363 units.

8 0
3 years ago
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