Okay, my brother and i get togeather to have some "quality time" and now he thinks he's right about something i KNOW that i am right about(well......i think) and i need to persuade him.Were arguing about a Pre-Algebra equasion. DON"T ASK ME HOW WE GOT ON THAT SUBJECT< JUST ANSWER THE DANG QUESTION!! : )
5 squared - (3 cubed - 4 x 5)
5 sq. - (27- 4x5)
5 sq. - (27 - 20)
5 sq. - (7)25 - 7 = 18
Am i right, or is it
5 squared - (3 cubed - 4 x 5)
5 sq. - (27- 4 x5)
5 sq. - (23 x5)
5 sq. - (115)25 - 115 = - 90
2006-08-24 13:40:38 · 12 answers · asked by Scottish 1 in Education & Reference ➔ Homework Help
You are right. Its called the BODMAS rule...where you must multiply or divide before adding or subtracting.
2006-08-24 13:48:56 · answer #1 · answered by Anjali 3 · 0⤊ 0⤋
the order of operation is
Bracket
power
multiplication/division
addition subtraction
so 5^2 -(3^3-4*5)
25 -(27-4*5)
25 -(27-20)
25 -(7)
18
2006-08-24 20:50:05 · answer #2 · answered by Wicked Mickey 4 · 0⤊ 0⤋
The first one is the right one ofcourse!!!....I'll explain why:
25 -(27- 4x5 )
I want you to replace the 5 by an X,
so instead of (27- 4 x 5), we'd have (27 - 4 x X ) = 27 - 4X
now can we substract 4 from 27,and leave the X??!!
NO!,we have to substract the whole thing (4X) from 27.
Get it?.
2006-08-24 21:03:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Well as far as order of operations goes, your right, but i didnt really get where you went with all the 5 squared.
2006-08-24 20:43:34 · answer #4 · answered by ¡Free Love! 4 · 0⤊ 0⤋
The question is about something called order of operation. That is: do you do the subtraction first or the multiplication?
Without knowing the order and without parentheses, there is no way to tell. You need to ask your teacher to explain "order of operation" to you. She or he will thank you for the question. It is something you need to know.
2006-08-24 20:47:21 · answer #5 · answered by Bethany 7 · 0⤊ 0⤋
You are right multiplication always comes before addition or subtraction when given equal position in an equation.
2006-08-24 20:46:53 · answer #6 · answered by BettyBoop 5 · 0⤊ 0⤋
Yeah, your right. Remember BEDMAS, brackets, exponents, division, multiplation, adition, subtraction in the order they appear.
2006-08-24 20:48:13 · answer #7 · answered by Devil'sadvocate 3 · 0⤊ 0⤋
The first answer is correct. You would multiply/divide before you add/subtract.
2006-08-24 20:43:14 · answer #8 · answered by Crescent 4 · 1⤊ 0⤋
your right. order of operations would make you do the 4x5 then subtract.
2006-08-24 20:47:00 · answer #9 · answered by fullerfyed 3 · 0⤊ 0⤋
Okay their is no such thing as a short question and this by far isnt a short one. Title your questions appropiately.
2006-08-24 20:42:27 · answer #10 · answered by cats4ever2k1 5 · 0⤊ 1⤋