[ 5,-8,2,y] - [x,7,11,4]=[-2,z,13,13] solve for x y and z

  [x, y, z] = [7, 17, -15]

Step-by-step explanation:

The list equation resolves to four equations involving corresponding list elements:

  5 -x = -2   ⇒   x = 7

  -8 -7 = z   ⇒   z = -15

  2 -11 = 13   ⇒   looks like a wrong sign somewhere; this is FALSE

  y -4 = 13   ⇒   y = 17

Comment on the question

Since one of the equations turns out to be false, it makes us suspect there may be typos in the others as well. YMMV

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify