What happens during destructive interference? the crests and troughs of out-of-phase waves cancel each other out the crests and troughs of two waves combine into one larger waveform two waves add their effects to each other waves move in opposite directions and repel each other

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

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Ineed the answer to question 9 and 10