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Wittaler [7]
2 years ago
10

AC = 3x -8, BC = -7 + 2x, and AB = 8. Find BC.

Mathematics
1 answer:
Rainbow [258]2 years ago
4 0

Answer:

AB+BC+AC=180°

8 - 7 + 2x +3x -8= 180°

-7+5x=180°

x=180°+7/5

x=37.4°

again

BC=-7+2*37.4

=67.8°

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Question 2
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To determine the time needed to leave, add up all of the elapsed time and subtract that from the 8:50 departure time. The 10 minutes from walking to the platform puts us at 8:40 am, 30 minutes to reach the station puts us at 8:10 am, and the extra 15 minutes gives a time of 7:55 am.

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Yvette graphs the equivalent ratios shown in the table.
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(20,4)

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Read 2 more answers
Evaluate the expression 10-2x for the x values given below
cricket20 [7]

For this case we have the following expression:

10-2x

Let's evaluate the expression for some values of x.

We have then:

For x = 1:

10-2 (1)\\10-2\\8

For x = 2:

10-2 (2)\\10-4\\6

For x = 3:

10-2 (3)\\10-6\\4

For x = 4:

10-2 (4)\\10-8\\2

For x = 5:

10-2 (5)\\10-10\\0\\

Answer:

The value of the expression in ordered pairs is:

  • (1,8)
  • (2.6)
  • (3,4)
  • (4.2)
  • (5.0)
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3 years ago
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