23) a backyard has a perimeter of 144m.
a) if the backyard is square, what are the dimensions?
b) if the backyard is rectangular, and the length is three times the width, what are the dimensions?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)