2007-10-14 13:18:08 · 30 answers · asked by hunedip22 1 in Education & Reference ➔ Homework Help
38
2007-10-14 13:19:53 · answer #1 · answered by Ryoma Echizen 3 · 1⤊ 3⤋
You need to show the equation exactly as it is written because where/how the parenthesis are placed matters.
e.g 3+5(7) has a different order of operations than (3+5)7
In the first case, 3+5(7) = 3 + 35 = 38.
In the second case, (3+5)7 = (8)7= 56.
The placement of parenthesis indicates the order of operations. Generally, you work from inside the parenthesis outward; perform the math inside the parenthesis then proceed to the other operations.
The PEMDAS tip mentioned earlier is a good one.
2007-10-14 13:30:00 · answer #2 · answered by Treadstone 7 · 0⤊ 1⤋
3+5 x 7= 56
2007-10-14 13:20:50 · answer #3 · answered by insane in the membrane! 1 · 2⤊ 3⤋
3 + (5*7)
3 + 35 = 38
2007-10-14 13:20:46 · answer #4 · answered by DLoc1337 2 · 1⤊ 3⤋
It depends on what the question is. If it is
3+5*7
By order of operation you do multiplication first
5*7=35
then you add the 3
3+35= 38
If the question is (3+5)*7
then you do what is in the parenthesis first
3+5=8
then you multiply
8*7=56
Use PEMDAS to help you remember order of operation
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
2007-10-14 13:22:39 · answer #5 · answered by sam 2 · 2⤊ 2⤋
56
2007-10-14 13:20:17 · answer #6 · answered by Anonymous · 1⤊ 3⤋
56
2007-10-14 13:20:03 · answer #7 · answered by R.J. M 2 · 2⤊ 3⤋
38
2007-10-14 13:19:28 · answer #8 · answered by Anonymous · 1⤊ 4⤋
you do 5x7 first, which is 35, and then add three. so the answer is 38
remember you always have to do order of operations!
P- parenthesis
E- exponents
M- multiplication
D- division
A- addition
S- subtraction
a sentence you can remember it by is " please excuse my dear aunt sally."
ahh, i wish i still had homework like that : )
(well, actually it depends on how the problem is written. if there are ( ) around the 3+5, then the answer is obviously 56
: D)
2007-10-14 13:21:26 · answer #9 · answered by shittalkie 2 · 2⤊ 3⤋
5*7=35
3+35=38
2007-10-14 13:20:45 · answer #10 · answered by I'm A Cute Little Bumblebee 2 · 1⤊ 4⤋