Are any of these in a 1: 2: 1 ration form? if so how do you know? will mark as b. a
1) 3: 8: 3
2) 16: 22: 2
3) 18: 32: 16

No, none of these are in a 1:2:1 ratio form. To find out we simply divide the first number by the original number, then multiply the other original numbers by what we just got to find out if it works.

Let's try #1.

3/1 = 3. 2(3) = 6. We now already know that #1 is incorrect because it says 8 instead of 6.

#2 and #3

We can tell these are both wrong because the first and last number have to equal the same, but in these they are different.

Hope this helps you! :)

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.