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Mathematics 8 Online
OpenStudy (anonymous):

A pool company is creating an image for a client that has the look of a 3-D image for a family pool and a similar dog pool. Find the value of a in the drawing below:

OpenStudy (anonymous):

OpenStudy (dtan5457):

Considering they are proportional.. they have a ratio of 1:3

OpenStudy (dtan5457):

Got it?

OpenStudy (anonymous):

so i put 1:3 as my answer?

OpenStudy (dtan5457):

No, your trying to find the missing sides right? The one on the left is 3 times as big as the one on the right.

OpenStudy (dtan5457):

Therefore, just make sure the sides on the right is 1/3 of the side of the left. Vice versa.

OpenStudy (dtan5457):

Notice line BF is 4 and RV is 12.

OpenStudy (anonymous):

oh i see! so how would i find the value?

OpenStudy (dtan5457):

Well if TV is suppose to be 3 times as big as WB .. TV=6 WB=2

OpenStudy (dtan5457):

Clear?

OpenStudy (dtan5457):

If you have further questions don't hesitate to ask

OpenStudy (anonymous):

so how would i put this in as an answer i can't put 2 in.

OpenStudy (anonymous):

@dtan5457

OpenStudy (dtan5457):

A would be 21.

OpenStudy (dtan5457):

7 times 3=21

OpenStudy (anonymous):

oh i see now because before the ratio was 1:3 right?

OpenStudy (dtan5457):

Exactly :)

OpenStudy (anonymous):

can u help with 2 more?

OpenStudy (dtan5457):

Sure.

OpenStudy (anonymous):

A company is looking to design a new cover for their smartphone. The scale drawing of the design is shown below. The coordinates of the actual cover are: H' (10,0); I' (0, 0); J' (0, 16); K' (10,16). Is the design of the cover similar to the actual cover? (5 points)

OpenStudy (anonymous):

Yes; the corresponding sides are proportional. No; the corresponding sides are not proportional. Yes; the corresponding angles are proportional. No; the corresponding angles are not proportional.

OpenStudy (dtan5457):

The height is, but the lengths are not proportionate.

OpenStudy (anonymous):

so the answer is "no the corresponding sides are not proportional?'' right?

OpenStudy (dtan5457):

yep

OpenStudy (anonymous):

last one

OpenStudy (anonymous):

can u see if my answer for number 1 is correct and idk what number 2 is

OpenStudy (anonymous):

@dtan5457

OpenStudy (anonymous):

u there? @dtan5457

OpenStudy (anonymous):

@dtan5457 hello? can u help with the last one i put in?

OpenStudy (dtan5457):

Sorry I was away, your choice for one is correct and the 2nd should be parallel.

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