Math
posted by Jocelynn .
The layer of gold coating on a ring should be 0.03 millimeters thick when the ring is completed. A coating of 0.021 millimeters has already been applied. How many more millimeters of gold coating must be added to finish the ring?
A. 0.18 millimeters
B. 0.09 millimeters
C. 0.009 millimeters
D. 0.018 millimeters
I believe it is either C or B. But strongly leading towards B
If I'm wrong please elaborate how to correct my problem
Respond to this Question
Similar Questions

Chemistry
Can anyone help and check my answers? A. 8.43 cm to millimeters 84.3 millimeters. B. 2.41x10^2 cm to meterss 0.0241 meters. C. 294.5 nm to centimeters I don't know how to concert this. D. 1.445x10^4 m to kilometers 0.001443 
Math
A waffle cone has a width of 7.6 cm and height of 15.2cm and a chocolate coating that is 2mm thick. What is the volume of the chocolate coating? 
mathlight
An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located? 
science
1. An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located? 
human resources, (compensation and benefits)
1. What factors determine the relevant market for a survey? 
algebra
A rectangular prism has a volume of 750 cubic millimeters. Its length is 15 millimeters, and its width is 10 millimeters. What is its height 
Chemistry
An electrolytic tincoating process gives the coating 30 millionths of an inch thick. How many square meters can be coated with one kilogram, density 7.30 g/cm^3? 
Physics
A nonreflecting single layer of a lens coating is to be deposited on a lens of refractive index n = 1.7. Determine the refractive index of a coating material and the thickness required to produce zero reflection for light of wavelength … 
Math
In a study of 800 men,diastolic blood pressure was found to be approximately normally distributed, with a mean of 84 millimeters (mm) of mercury and standard deviation of 10 millimeters. Use the 689599.7% rule to determine what percentage … 
Math 1
In a study of 500 men, diastolic blood pressure was found to be approximately normally distributed, with a mean of 82 millimeters (mm) of mercury and standard deviation of 10 millimeters. Use the 689599.7% rule to determine what …