The circle below is being enlarged by a scale factor of
2. What is the radius of the
new drawing?
1.9 cm
No links :)

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)