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Mathematics 24 Online
Aidsinyou:

Help pls, can someone help me learn how to do these?

Aidsinyou:

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Aidsinyou:

.?

DanGonz:

look for longitude and wavelength and youll find answer :)

Aidsinyou:

idk what wavelength is

DanGonz:

distance bettween lines

jhonyy9:

when two lines intersect how are opposite angles ?

jhonyy9:

@AZ

Aidsinyou:

I am so confused

DanGonz:

dont be well help

Aidsinyou:

ok

Aidsinyou:

like how do I find the value of x?

jhonyy9:

ok when two lines intersect the opposite angles are congruent so in this way what can you write ?

DanGonz:

here an equation is y=mx+b

DanGonz:

your slope and formula

jhonyy9:

not necessary please dont interfere

DanGonz:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 not necessary please dont interfere \(\color{#0cbb34}{\text{End of Quote}}\) ok sir

Aidsinyou:

i am lost

Aidsinyou:

how do i find the value of x in <FSM (7x + 8 degrees) ?

jhonyy9:

ok look pls on angles angle WSU and angle FSM are these angles opposite angles ? so then take them equal and calcule x value

jhonyy9:

5x +32 = 7x +8 find x

Aidsinyou:

my brain is dead, im so dumb rn sorry i cant

AZ:

Jhonyy logged off since it's getting late where he lives and asked that I take over :)

Aidsinyou:

oh ok

AZ:

What you need to know about vertical angles is that they're congruent- that means they equal each other So you see this image The angles opposite each other are equal to each other

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AZ:

That's how Jhonyy was able to get 5x +32 = 7x +8

Aidsinyou:

do they equal 180?

AZ:

No, if they were on the same line like angle a and b, then it would add up to 180 |dw:1614629931298:dw|

AZ:

but when they're opposite each other, it means that the two angles equal each other So just as an EXAMPLE |dw:1614630000625:dw|

AZ:

if we knew one of those angles was 100, then we would know that the angle OPPOSITE it is also 100 we also know that those two other angles we didn't list are equal to each other and all 4 angles added up together makes 360 degrees

Aidsinyou:

my brain is about to explode

Aidsinyou:

this makes no sense

AZ:

which part doesn't make sense? do you agree that the angles opposite each other are equal to each other

Aidsinyou:

yes i agree, its the finding x part tho

AZ:

okay since they're equal to each other, we can come up with 5x +32 = 7x +8 now to solve for x, we just have to get it all by itself

AZ:

so let's subtract 5x on both sides first what is 7x - 5x =

Aidsinyou:

2x?

AZ:

Good! So now we have 5x +32 = 7x +8 5x + 32 -5x = 7x + 8 -5x on the left side of the equal sign, the 5x cancels out and on the right side, you said that 7x-5x = 2x so we get 32 = 2x + 8 now subtract 8 on both sides what is 32 - 8 = ?

Aidsinyou:

24

AZ:

good, now we have 24 = 2x now we have to divide 2 on both sides 24/2 =

Aidsinyou:

12

AZ:

so that's the value of 'x' but your question wants us to take this number and plug it into either one of the angles and find out what the value of the angle is remember how we said that both angles are equal to each other? so that means, it doesn't matter which angle we choose to plug in 12

AZ:

so angle FSM is 7x + 8 what is 7*12 = and then add 8

Aidsinyou:

so the answer is B correct?

AZ:

That's your answer!

Aidsinyou:

Thank you!

AZ:

You're welcome!

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