Answer:
x=21.5, plug it in and get 69 degrees
Step-by-step explanation:
4x-17+31=90
4x+14=90
4x=86
x=21.5
Mean= Sumof all the numbers/ number of data
So,
23+37+11+58+13+45=187
Now...
187/6=31.166666667 Answer
hope it helps....
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