header bg

Scan QR code or get instant email to install app


Blair’s average (arithmetic mean) on two physics tests is 7. What should Blair’s score be on the next test to have an overall average of 8 for all the tests?

A 10

The arithmetic mean is defined as the sum of the terms divided by the number of terms. To have an overall average of 8, \([ \frac{\mathrm{7 \times 2+x} }{\mathrm{3} } = 8 ] \) then x=10.



3 weeks ago

I don't feel like it gives enough elaborate information on the answer


3 years ago

Downloaded this app to improve my asvab score , and app actually gives me in detail how to solve and find the answer to the problems for math. Amazing.

U.S Terminator

3 years ago

It’s a good app


3 years ago

Great I gotta make a 50 or higher

Leave a Reply

Your email address will not be published.