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Mathematics 31 Online
princeevee:

i need some help please

princeevee:

1 attachment
princeevee:

@dude

dude:

Any idea?

princeevee:

i think it might be C

dude:

|dw:1529708828463:dw| Believe you're right

princeevee:

1 attachment
princeevee:

@dude ?

princeevee:

@Vocaloid welcome back

jhonyy9:

@princeevee do you have any idea about this ?

princeevee:

i'm thinking it's C.

princeevee:

that's what i think is the closest to 3/2

jhonyy9:

so my idea that than the top has a width of 3 and length of 8 and similarity ratio of 3/2 so the bottom has width 3*3/2 = ? and length of 8*3/2 = ?

jhonyy9:

@Vocaloid

princeevee:

24/3 is still 8

jhonyy9:

exactly

princeevee:

but 16 is a multiple of 8

jhonyy9:

how you get this 24/3 ?

Vocaloid:

8*3/2 is 24/2 not 24/3

jhonyy9:

8*3/2 = ?

jhonyy9:

@princeevee do you understand it ? multiply 8*3 and divide by 2

jhonyy9:

and the width the same 3*3/2 = ?

jhonyy9:

@princeevee so in this way what choice is right ?

princeevee:

12

princeevee:

A?

jhonyy9:

yes the bottom length

jhonyy9:

yes exactly A .

jhonyy9:

do you understand it now ?

jhonyy9:

hope helped good luck bye bye

princeevee:

alright, thanks..

princeevee:

@Vocaloid want to help me a bit more?

princeevee:

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Vocaloid:

if you look at the diagram MP and SV are corresponding right? so it either has to be MP/SV or SV/MP depending on which one gives you an answer choice

princeevee:

1.3 seems close, i guess

Vocaloid:

good, 1.3

princeevee:

1 attachment
Vocaloid:

the smaller width is 2 it says the scale factor is 3/4 so 2 = 3/4 * large width, solve for large width

princeevee:

so, lets see...

Vocaloid:

large width is being multiplied by 3/4 right? so you just need to divide both sides by 3/4 to isolate what large width is

princeevee:

so 5/3/4?

Vocaloid:

if you want to do the length instead that's fine 5/(3/4) = ?

Vocaloid:

remember your rules for dividing fractions, flip the fraction over and change the sign to a multiplication sign 5/(3/4) = 5 * (4/3) = ?

Vocaloid:

rules for multiplying fraction: multiply the numerators first 5 * 4 then divide by the denominator 3 20/3 or in other words, 6 2/3

Vocaloid:

making the first option the only viable choice

princeevee:

1 attachment
princeevee:

@Vocaloid

Vocaloid:

we don't know anything about the side lengths of MP , MN, JK, or JL, just the angle between them therefore there's no proof that these two shapes are similar

princeevee:

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Vocaloid:

triangle proportionality theorem DB/BC = DE/EF fill in the missing side lengths and see which proportion matches

Vocaloid:

any progress yet? you just need to look at the diagram to see what the side lengths are, plug them into the ratio, and see which answer choice matches the ratio

princeevee:

B? sorry, i'm kinda multitasking chores at the moment, continue please

Vocaloid:

good

princeevee:

thank you.

princeevee:

i'm just going to close this to prevent lag

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