Simplify
-6√20+2√45+7√5

show Woking out to prove ans please

Step-by-step explanation:

Using the rule of radicals

× ⇔

Simplifying the radicals

= = × = 2

= = × = 3

Thus

- 6(2) + 2(3) + 7

= - 12 + 6 + 7

=

the correct answer is 5

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%