A car is traveling at 55 mi/hr. What is the cars speed in feet per second

The triangles are similar. what is the value of x? enter your answer in the box. x = two right triangles. the larger right triangle is labeled x on the longer leg, 12 on the shorter leg and 20 on the hypotenuse. the smaller triangle is labeled 4 on the longer leg, 3 on the shorter leg, and 5 on the hypotenuse.

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For the equations below which statement is true ? -2x=14 6x=-42