Jacob walked three and two-eighths of a mile and benjamin walked two and five-eighths of a mile. how much further did jacob walk than benjamin?

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Can (2,3 and square root 10) be sides ona right triangle?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1