Find the value of y. Express in simplest radical form.

5 root 5

Step-by-step explanation:

it's just u will make square of 10 and 5 then add them together

after u will put them under root

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%

21/58.

hope to be marked brainliest