The two rectangles below have the same height-to-width ratio. What is the value of w? (If necessary, round your answer to two decimal places.)

B. 16.19

Step-by-step explanation:

We have given height to width ratio of two similar rectangles

Hence, we solve using Proportionality

Height a/Width a = Height b/Width b

21/34 = 10/w

Cross Multiply

21 × w = 34 × 10

w = 34 × 10/21

w = 16.19047619

Approximately to decimal places = 16.19

Option B is correct

4th option is correct xy=-10

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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%