A teacher wanted to fairly choose three students from a class of 23 to raise the school's flag. She assigned each student a two-digit number from 01 to 23. (Let's consider "01", "02", etc. to be two-digit numbers.) She then selected the following line from a random number table. 21215917917683658678870543168793205 Starting from the left, she used the line above to form two-digit numbers as follows. 212159 ... Using this new list and starting from the left, she chose three two-digit numbers from 01 to 23. She skipped numbers she had already chosen, the number 00, and numbers greater than 23. The students who were assigned these two-digit numbers were chosen. Which three students did the teacher choose? Student, Student, Student

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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.

answer: it's d

step-by-step explanation: