20. the average(arithmetic mean) of 6 positive numbers is 5.if the average of th
ID: 3091775 • Letter: 2
Question
20. the average(arithmetic mean) of 6 positive numbers is 5.if the average of the least and greatest of these numbers is 7,what is the average of the other 4 numbers? a. 3 b. 4 c. 1,000 d. 6 e. 7 21) If the average of 27-x, x-8, and 3x+11 is y, what is theaverage of 2y and 2y/3? a. 4x+40 b. x+10 c. 8x+80/3 d. 4x+40/3 e. 2x+20/3 **PLEASEE HELP ASAP! I WILL RATE ASAPPPPP!** 20. the average(arithmetic mean) of 6 positive numbers is 5.if the average of the least and greatest of these numbers is 7,what is the average of the other 4 numbers? a. 3 b. 4 c. 1,000 d. 6 e. 7 21) If the average of 27-x, x-8, and 3x+11 is y, what is theaverage of 2y and 2y/3? a. 4x+40 b. x+10 c. 8x+80/3 d. 4x+40/3 e. 2x+20/3 **PLEASEE HELP ASAP! I WILL RATE ASAPPPPP!**Explanation / Answer
Hi, remember that you only can do one quertion per post. The first one: Supose the numbers are a,b,c,d,e,f . Their arithmeticmean is (a+b+c+d+e+f)/6 = 5 Also, (a+f)/2 = 7.; i.e.: a+f = 14 Replace: (b+c+d+e+14)/6 = 5 Solving: b+c+d+e =(6*5)-14 b+c+d+e= 16. So, the arithmetic mean of the other 4 is: (b+c+d+e)/4 = 16/4 (b+c+d+e)/4 = 4 The answer is b That's all. Enjoy it and....RATE ME!!! That's all. Enjoy it and....RATE ME!!!Related Questions
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