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# hi i need some help with part a and b.

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This is part a.      The "normal" high temperature for a June day in Albemarle is 82 degrees(degrees Fahrenheit).

Last year, the first ten days of June were unusually hot, with highs of 84 degrees, 88 degrees, 91 degrees, 92 degrees, 96 degrees 94 degrees 89 degrees 78 degrees, 87 degrees, and 81 degrees. How many degrees above normal was the average high for that 10-day period?

This is part b.      After Albemarle's heat wave, the rest of June was cooler. In fact, at the end of the month, meteorologists reported that the average high for all 30 days in June was just 80 degrees.

What was the average high (in degrees Fahrenheit) from June 11 through June 30?

KEEP IN MIND ALL OF IT IS DEGREES FAHRENHEIT.

Dec 10, 2017

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Avg for 1st 10 days :

( 84 +88 + 91 + 92 + 96 + 94 + 89 + 78 + 87 + 81) / 10  =

880/10  =

88°  =

6° above average

For 30 days....if the average temp each day was 80...then the sum of the temps must have been

(30 *80)  =  2400

So......subtracting the sum of the temps for the first 10 days - 880 -  from this we have  =  1520

So....this is the sum of the temps for the last 20 days of the month....so.....the average temp for these days  is just

1520 / 20   =     76°

Dec 10, 2017