98 points and brainliest! solve for the variable. 11.) z to 4 = 8/5 12.) 9 to 15 = 15 : y 13.) 11 : x = 5 to 1

11. z = 32/5

12.  y =25

13. x = 11/5

Step-by-step explanation:

11.  z       8

  =

4             5

using cross products

z*5 = 4 * 8

5z = 32

divide by 5

z = 32/5

12.  9       15

  =

   15         y

using cross products

9* y = 15 * 15

9y = 225

divide by 9

9y/9 = 225/9

y =25

13.   11       5

      =

      x         1

using cross products

11*1 = 5x

divide by 5

11/5 = x

22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

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