You have just timed a person doing a job a few times. the first time it took the person 25 minutes, the second time it took 20 minutes, and the third time it took 17.55 minutes. which learning curve unit improvement factor should you use?

solution:

T1 = time required for first unit = 25 minutes

T2 = time required for 2nd unit = 20 minutes

T3 = time required for 3rd unit = 17.55 minutes

Tn = time required for nth unit

Learning rate from 1st to 2nd unit = Time required for 2nd unit/time required for 1st unit = L2/ L1

T2/ T1 = 20/25 = 0.80

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225