Acopper wire is 1 meter long at a temperature of 20°c. what will be the length of the wire at a temperature of 50°c?

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points

The measure of an angle is 117°. what is the measure of a supplementary angle?