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Salsk061 [2.6K]
3 years ago
10

Dying for help please failing mathh

Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
6 0
17:C
18:Z
19: Kai
20: B
21: ?
22: A
23: ?
24: ?
25: D
26:D
JulsSmile [24]3 years ago
4 0
You might want to stick to at most five questions at once, makes it easier for the rest of us. :)

17. T has a vertical line of symmetry (along the center line).
18. Z looks the same if you turn it halfway around.
19. The passes total to 150°, which is a little less than 180°, so I estimate it would be in front of Kai.
20. Left is the -x direction. Up is the +y direction. this is (x-6, y+4)
21. Every dilation has a center (where it's dilated from) and a scale factor (how much it's dilated).
22. It must be A, because it's the only one where the number of moves adds up to 16.
23. It can be determined to be B just by tracking where point C would end up through the transformation.
24. A 180° rotation flips the signs on both components to give you (-1, 6).
25. Right is the +x direction. Down is the -y direction. (x+3, y-5)
26. This is a reflection.

Need clarification on anything?
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PLEASE HELP!!! 100 POINTS!
arlik [135]

Answer:

  x = 0; y = -6; z = 1

Step-by-step explanation:

You want to find the solution to the system of equations ...

  • 9x+y-3z=-9
  • 10x-y+2z=8
  • -10x-y+4z=10

<h3>Solution</h3>

This set of equations is conveniently solved using the matrix row-reduction features of a scientific or graphing calculator, spreadsheet, or any of a number of apps or on-line calculators.

The attachment shows the solution to be ...

  (x, y, z) = (0, -6, 1)

__

<em>Additional comment</em>

Solving a system of three or more equations "by hand" often can be done by an ad hoc process. It can be done in systematic fashion using Gauss-Jordan reduction techniques, but that often gets messy. Similarly, Cramer's Rule can be used, but that math tends to involve more arithmetic operations than are really necessary.

Adding the first equation to the other two eliminates the y-variable and reduces the system to two equations in two unknowns.

  (9x +y -3z) +(10x -y +2z) = (-9) +(8) . . . . adding [1] and [2]

  19x -z = -1 . . . . simplified

  (9x +y -3z) +(-10x -y +4z) = (-9) +(10) . . . . adding [1] and [3]

  -x +z = 1 . . . . simplified

At this point, we could graph the two equations, or we can proceed algebraically.

Adding these two equations gives ...

  (19x -z) +(-x +z) = (-1) +(1)

  18x = 0   ⇒   x = 0

Using the second of the reduced equations, we find ...

 -x +z = 1

  0 +z = 1   ⇒   z = 1

And using the second of the original equations, gives us ...

  10(0) -y +2(1) = 8

  -y = 6 . . . . . subtract 2

  y = -6 . . . . multiply by -1

Then the solution is (x, y, z) = (0, -6, 1), as above.

6 0
1 year ago
Solve for b .<br><br> -9 b = 27<br><br> b =
saul85 [17]

Final Answer: b = -3

Steps/Reasons/Explanation:

Question: Solve for b. -9 b = 27. b = ?

<u>Step 1</u>: Divide both sides by -9.

b = -\frac{27}{9}

<u>Step 2</u>: Simplify \frac{27}{9} to 3.

b = -3

~I hope I helped you :)~

5 0
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pashok25 [27]

Answer:

I believe the answer is p=169?

Step-by-step explanation:

13^2 is 13×13 which equals 169

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Willam fills 1/3 of a water bottle in 2/5 of a minute. How much time will it take him to fill the bottle?​
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Answer:

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Step-by-step explanation:

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Answer:

The answer is 22.5 miles

Step-by-step excplanation:

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