Kathy is baking cakes. each cake requires 1/9 of teaspoon of vanilla, and she 11/3 of a teaspoon how many cakes can she bake

She can make 3 cakes with her 11/3 teaspoons of vanilla because if you multiply 11/3 with the 1/9 it will show you the amount to cakes she can make and she can make three.

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.

1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply