what is the average price of the books? choose the statement that correctly calculates the average.
A.($32+$45+$39) : 3
B. $32+$45+$39 : 3
2006-12-13 02:43:09 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Parentheses never hurts (unless they are used incorrectly). The answer is A.
In B, only the $39 would be divded by 3. That is incorrect.
2006-12-13 02:48:29 · answer #1 · answered by ? 6 · 1⤊ 0⤋
it 32 + 45 + 39 ? 3 = the average
2006-12-13 03:43:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
B is incorrect because without brackets, division has priority over addition. So it would do $39:3 first, and you'd get $32+$45 +$13 which is wrong
A does the addition first, then divides the total by 3, which is correct.
2006-12-13 02:48:52 · answer #3 · answered by Anonymous · 0⤊ 0⤋
the right answer is A.($32+$45+$39) : 3
meaning: u total the price of three books, then divide it.
2006-12-13 02:51:17 · answer #4 · answered by Vast_Sea 1 · 1⤊ 0⤋
Assuming : means divide then A is the correct answer. It is necessary to have the paretheses to the sum is divided by three and not just the $39.
2006-12-13 02:48:50 · answer #5 · answered by ironduke8159 7 · 0⤊ 0⤋
A,in B 39 can only be divided
2006-12-13 03:10:35 · answer #6 · answered by Dania K 2 · 1⤊ 0⤋
The correct answer is letter A. We must add first the three given amounts before we divide it by three. Hence we must group the first three numbers then add and lastly divide it by three to get the average.
2006-12-13 02:52:03 · answer #7 · answered by Sheila 2 · 1⤊ 0⤋
A: because you have to add all of the numbers before you divide.
2006-12-13 02:52:04 · answer #8 · answered by hphgrwd 2 · 1⤊ 0⤋