The average Mathematics score of 200 students of a private school within valley is observed to be 70 with a. d 30 and the average Mathematics score of 300 students of a government school is observed to be 60 with sd 30. What are the combined average and standard deviation?

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60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant

a orange at the grocery store idk what other product that could be

4 inches will get you 10.16 centimeters, but you can either do 10.1 or round up to 10.2. good luck and hope this : )