Question

The pair of polygons is similar. Find the value of x.
one triangle is 75 in and 30 in the other is 12 in and x

Answer 1

i dislike this math unit

Answer 2

i feel like the answer is 37.5 in but tht seems to big

Answer 3

:)

Answer 4

Well, that's a good instinct... that doesn't sound right to me either.

Here's how I look at it.

75 inches and 30 inches ----->>>>> 12 inches and x inches

So, "x" must be less than half of 12, since 30 is less than half of 75. That will at least give you a reasonable idea of whether your answer makes any sense.

Answer 5

Again, it's a ratio:

BIG : LITTLE
75 : 12
30 : ???

Answer 6

However, in this case, it might be easier to set up the ratio like this:

Triangle 1 / Triangle 2
75 / 30
12 / x

Answer 7

soo uh 30 x 12 = 360

Answer 8

yes... you can cross multiply like that:

12 * 30 = 75 * x

Answer 9

yup so 75 x 5 = 375 which is why i thought the other answer

Answer 10

12 * 30 = 75 * x
360 = 75 * x

Then divide both sides by 75:
360 / 75 = x

Answer 11

4.8 and 1

Answer 12

x = 4.8)

So, to check, find both ratios... they should be equal.:

75/30 = 2.5
and
12 / 4.8 = 2.5

So if x = 4.8, the ratios work out the same.

Answer 13

this question is mutiple choice and these r the possible answers
187.5
12 in
30 in
37.5 in

Answer 14

yikes. Do you have a diagram?

Answer 15

ya lol ya theres a pic

Answer 16

I apparently mis-imagined what the picture was. My math is right but not for this problem :)

If you can post the pic, let's try it again :)

Answer 17

looks like tht

Answer 18

Are the 75, 30, 12, and x labeled on your picture?

Answer 19

yes

Answer 20

Can you post the pic again (you can use the copy previous picture button) and add the labels?