the work out to the line x-y+4=0 intersects the curve y=2x^2-4x+1 at points p and q if coordinates of p are 3,7 what are the coordinates of q

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

You’re giving a cube with a length of 2.5 cm and a width of 2.5 cm and a high of 2.5 cm you place it on a scale and it is 295 g calculate the density

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?