Elibri has a spinner like the one that follow, where 3/5 of the spinner is red, 1/5 is blue and 1/5 is yellow. elibri earns 15 points every time she spins a blue of yellow space, and she earns 5 points every time she spins a red space. what is the expected value of a single spin?and you

The expected value is the sum of values multiplied by their probabilities.

... 15×(1/5+1/5) + 5×(3/5) = 6+3 = 9

The expected value of a single spin is 9 points.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

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