The dean of the College of Mathematics is determining the order in which the graduating students will give their senior presentations. Each of the four academic advisers in the College of Mathematics has been assigned 9 students who are giving presentations this semester. The dean wants each student to have a fair chance of being selected to present first. Which of the following best describes a method of ensuring that each graduating student has a fair chance of being selected to present first?

22 dimes and 9 nickels

step-by-step explanation:

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.

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: