BRASCA, 13 bytes

1['/45S1?*+o]

Alternatively 1['/'\1?#$xo] works too.

Try it online!

Explanation

1[          ]  - While 1:
  '/45S1?*+    -   47 + (45 * rand(0,1))
           o   -   Print it!

BRASCA, 13 12 bytes

1[`/\`1?#$o]

Try it online!

Explanation

1[         ]  - While 1:
  `/\`       -   Push \ and /
      1?      -   Push rand(0,1)
        #$    -   If truthy, swap the top two items, else skip.
          o   -   Print it!

BRASCA, 13 bytes

1['/45S1?*+o]

Try it online!

Explanation

1[          ]  - While 1:
  '/45S1?*+    -   47 + (45 * rand(0,1))
           o   -   Print it!

BRASCA, 13 bytes

1['/45S1?*+o]

Alternatively 1['/'\1?#$xo] works too.

Try it online!

Explanation

1[          ]  - While 1:
  '/45S1?*+    -   47 + (45 * rand(0,1))
           o   -   Print it!