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Mathematics 84 Online
CC12:

Solve for X

CC12:

1 attachment
CC12:

@dude

CC12:

is it 7.8 @dude

CC12:

@Shadow

Shadow:

We know that: \[2(25x -15) + 2y = 180\] Since B and C are congruent to each other.

Shadow:

Where did you get 7.8 from?

CC12:

I dont know

Shadow:

Wait a second, am blind

Shadow:

This is an equilateral triangle lol

Shadow:

We know that: \[2(25x -15) + 2y = 180\] \[25x -15 = 2y\]

Shadow:

Since all sides are congruent to each other, all angles are congruent to each other.

CC12:

3/5+ y/25

Shadow:

We can simplify this though, with: \[3x = 180\] Since we know that three angles of the same length equal 180.

CC12:

60

Shadow:

Yeah but that's not the x we are looking for. That's just the measure of the angle.

Shadow:

Do you know what you would do?

CC12:

add to both sides ??

Shadow:

Since we know that all angles are 60 and we want to solve for x \[25x - 15 = 60\]

CC12:

x=3

Shadow:

Correct

CC12:

Thank you

Shadow:

No problem

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