How was i wrong here in this problem? Ss below

Question

m4nt1c0r3 · Answer

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mhanifa · Answer

Do you know the intersecting chords theorem?

m4nt1c0r3 · Answer

@mhanifa wrote:

Do you know the intersecting chords theorem?

Yes $$a \times b = c \times d$$

mhanifa · Answer

The first one would be:
9*21 = 27x

m4nt1c0r3 · Answer

@mhanifa wrote:

The first one would be: 9*21 = 27x

Which would equal 7

mhanifa · Answer

@m4nt1c0r3 wrote:

@mhanifa wrote:

The first one would be: 9*21 = 27x

Which would equal 7

Correct

snowflake0531 · Answer

1. 9(21) = 27x
x=7     Correct

2. 15(8) = 12(3x-5)
120 = 12(3x-5)
10 = 3x-5
3x=15
x=5
Correct.

3. (7x+2)18 = 20(6x+3) 
126x + 36 = 120x + 60
6x = 24
x=4
Correct.

4. (x+1)42 = (3x+1)30
42x+42 = 90x+30
12 = 48x
x = 1/4
this one you got wrong

m4nt1c0r3 · Answer

@snowflake0531 wrote:

1. 9(21) = 27x x=7 Correct 2. 15(8) = 12(3x-5) 120 = 12(3x-5) 10 = 3x-5 3x=15 x=5 Correct. 3. (7x+2)18 = 20(6x+3) 126x + 36 = 120x + 60 6x = 24 x=4 Correct. 4. (x+1)42 = (3x+1)30 42x+42 = 90x+30 12 = 48x x = 1/4 this one you got wrong

Oops they cut off the 11 lemme resend ss

m4nt1c0r3 · Answer

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m4nt1c0r3 · Answer

It says I got 2 wrong but it doesn't tell me which one and I don't think I got any of them wrong tho  :/

snowflake0531 · Answer

(x+11)42 = (3x+1)30
42x + 462 = 90x + 30
48x = 432
x = 9
yeah so you're correct

the system is just dumb then

m4nt1c0r3 · Answer

Huh that's weird.. I'll email my teacher then

mhanifa · Answer

@m4nt1c0r3 wrote:

It says I got 2 wrong but it doesn't tell me which one and I don't think I got any of them wrong tho :/

All seems correct

m4nt1c0r3 · Answer

There's another part that I would like you all to check if you can :)

mhanifa · Answer

Which formula did you use to solve these?

m4nt1c0r3 · Answer

Type 2

snowflake0531 · Answer

5. 7(7+x) = 8(8+13)
49 + 7x = 168
7x = 119
x= 17 
Correct.

6. 9(9+2x-7) = 10(18)
9(2+2x) = 180
18 + 18x = 180
x=9
Correct.

7. 9(12+x) = 7(6+6x)
108 + 9x = 42 + 42x
66 = 33x
x=2
Correct.

8. 10(13+x) = 6(18+2x)
130+10x = 108 + 12x
2x = 22
x=11
Correct

m4nt1c0r3 · Answer

@snowflake0531 wrote:

5. 7(7+x) = 8(8+13) 49 + 7x = 168 7x = 119 x= 17 Correct. 6. 9(9+2x-7) = 10(18) 9(2+2x) = 180 18 + 18x = 180 x=9 Correct. 7. 9(12+x) = 7(6+6x) 108 + 9x = 42 + 42x 66 = 33x x=2 Correct. 8. 10(13+x) = 6(18+2x) 130+10x = 108 + 12x 2x = 22 x=11 Correct

Guess it's another thing wrong with the system huh...

snowflake0531 · Answer

damn your system got some problems o-o

m4nt1c0r3 · Answer

Well I'm just going to email my teacher so I can talk to her about this tomorrow and get back to you guys about what's up with this

mhanifa · Answer

I got all correct as well

m4nt1c0r3 · Answer

Thanks for all your help :))

snowflake0531 · Answer

yw~

m4nt1c0r3 · Answer

I'll tell you guys the results tomorrow

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