This equation shows how the cost of a plumber's visit is related to its duration in hours. c = 24.9d + 11.4 the variable d represents the duration of the visit in hours, and the variable c represents the cost. what is the duration, in hours, of a plumber's visit that costs $31.32?

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In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

What type of symmetry does a rhombus have?