B. Find the Least Common Multiple (LCM) of the following sets of numbers. 15. 12 and 5
11. 8 and 3
12. 9 and 15
13.
14.
6 and 4
10 and 12​

11. LCM of 12 and 5 = 60

12.LCM of 8 and 3 = 24

13.LCM of 9 and 15 = 90

14.LCM of 6 and 4 = 12

15.LCM of 10 and 12 = 60

the answer is c)8

step-by-step explanaction:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.