-3 + 3n = -6 - 6n. Expand the brackets
3n + 6n = -6 + 3. Collect like terms
9n = -3
n = -3/9 = -1/3
1/3 is equivalent to 2/6 i hope this helped ^^
Multiply the z-score by the standard deviation:
2 x -1.5 = -3
Now add that to the mean:
49 + -3 = 46 inches.
1 yard is 3 feet
1 foot is 12 inches
Convert everything into inches:
9 x 12 = 108 in.
6 x 3 = 18 ft.
18 x 12 = 216
Add the inches together:
108 + 216 = 324 in
Multiply the inches by 2:
324 x 2 = 648 in
The answer is 648 inches.