Adding and subtracting fractions. solve each problem. write your answer as a mixed number if possible.

1.4 2/7 - 2 1/5
2.5 7/8 + 11/4
3.5/8 - 2/5
4.16/5 + 2 1/2

What are the coordinates of the image of p for a dilation with center (0, 0) and scale factor 2

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?

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.