If it is : (x + 5) / 8 = 6
multiply both sides by 8, eliminating the 8 on the left side
x + 5 = 8 * 6
x + 5 = 48
x = 48 - 5
x = 43
if it is : x + (5/8) = 6
subtract 5/8 from both sides
x = 6 - 5/8
x = 48/8 - 5/8
x = 43/8 or 5 3/8
3 sets of the 4 inch ribbon is 12,
10 sets of the 4 inch ribbon is 40
Let the time taken to finish the test be x.
P(50 < x < 60) = P(x < 60) - P(x < 50) = P(z < (60 - 60)/10) - P(z < (50 - 60)/10) = P(z < 0) - P(z < -1) = P(z < 0) - (1 - P(z < 1)) = P(z < 0) + P(z < 1) - 1 = 0.5 + 0.8413 - 1 = 0.3413
Answer:
ok so it is 22 c 3 for this answer
