Find the least common denomintor then express each fraction using the least commom denominator 7/10 and 5/6

What is the value of x? enter your answer in the box. (cm)

What is the missing constant term in the perfect square that starts with x^2 -20x

Carmen begins her next painting on a rectangular canvas that is 82.7 cm long and has a area of 8,137.68 cm2. will the painting fit in a frame with an opening that is 82.7 cm long and 95 cm wide? explain