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lora16 [44]
3 years ago
14

I need help on c and d please

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
3 0

A

We can't really do this without seeing 28, but I can give you an educated guess. The best way for me to proceed is to solve c.

The conjecture is that x = a + b. You should always find that to be true. C is the clincher.

Here's how you do that.

x + c = 180o That's true because all straight lines have 180o. If two angles make up the straight line that means that they are always equal to 180o So x + c = 180o

Now we move to the next step. All triangles also have 180o. That means that a + b + c = 180o

So we have two conditions that equal 180o. Equalities can be equated to one another.

a + b + c = x + c Subtract c from both sides.

a + b = x.

Study what has happened. Put in mathese, the two remote interior angles equal the exterior angle, which is what you are trying to prove.

Summary

a cannot be solved without 28

b you should say that the two remote angles (a and b) will always total x

c The proof is provided for you.


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28 lunch; 15 % tip<br><br><br> I need to show my workkkk
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28 x .15 = 4.2

28 + 4.2 = 32.2 <---- ANSWER

Hope this helps :)
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Need help with 34,35,36,37
nirvana33 [79]
34. x - 3 = 8x + 4
      -3 - 4 = 8x - x
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===================
35. -6 = -x - 2y
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2 + 5(-2y + 6) = -2y
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==================
36. 4x + 6y = 2000
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==================
37. 4x + 6y = 2000
       x + y = 410......multiply by -6
----------------------
4x + 6y = 2000
-6x - 6y = - 2460 (result of multiplying by -6)
--------------------add
-2x = - 460
x = -460/-2
x = 230 <=== tickets in advance
 

3 0
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The correct answer is B
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Answer:

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