Sal paints a wall in his art classroom. he uses 2/3 gallon of blue paint and 1/5 allon of white paint. how much paint does he use?

a) 3/8 gallon
b) 1 gallon
c) 7/15 gallon
d) 13/15 gallon

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?