Amy has 20 necklaces in a jewelry box. The probability of reaching into the jewelry box and pulling out a silver necklace is 0.85. What is the probability that Amy will reach in the jewelry box and pull out a necklace that is not silver?

0.15

Step-by-step explanation:

Given

Represent the probability of pulling out silver with p; So:

Required

Determine the probability of not pulling silver

This question is to test probability complements

And the complement rule of probability states that:

Where q and p are opposites. In other words:

q = probability of not pulling out silver

Substitute 0.85 for p in

Make q the subject

Hence, the required probability is 0.15

0.15

Step-by-step explanation:

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl