Miguel has six times David’s money, while Lisbeth has two dollars less than David. The sum of their money totals $77. To the n was rest penny, how much money does David have?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6

Arectangular garden measures 5m by 7m. both dimensions are to be extended by the same amount so that the area of the garden is doubled. by how much should the dimensions increase, to the nearest tenth of a metre?