The only articles of clothing in a certain closet are shirts, dresses, and jackets. the ratio of the number of shirts to the number of dresses to the number of jackets in the closet is 9: 4: 5, respectively. if there are more than 7 dresses in the closet, what is the total number of articles of clothing in the closet?

Step-by-step explanation:

if the ratio is 9:4:5

where n is a natural number

we know also that dresses >7, so:

Finally, the total number of clothing is:

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.