A runner runs a distance of 400 metres in a time of 50 seconds. What is his average speed?

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.

b). 4320 have a nice day

it is 570

step-by-step explanation:

im guessing (23,14). hope this : )