Is my sister getting to easy of homework (she is in the 7th grade)? when you reply, say the time you started and give the answers.
1=
explain why the equation "x+5=8" when x=3 is equivalant.
For 1-4, state the property being demonstrated for 7-10:
1= 3x(8X4)=(3x4)x3
2= (3) (8)= (8) (3)
3= 4+7=7+4
4= 8+(9+7)= (8+9)+7
2007-10-03 14:20:18 · 4 answers · asked by Christi S 1 in Education & Reference ➔ Homework Help
the one at the top is: because 3 plus 5 equals 8.
1-4 at the bottom is the communitive property.
9:31 !0/3
2007-10-03 14:31:52 · answer #1 · answered by Anonymous · 0⤊ 0⤋
first is equivalent because three is the only answer that makes both sides of the equation EQUAL.
next:
first one is NOT equal (3X32) is NOT equal to 12 times 3!! should first digit after the = sign be an 8?)
second IS equal
third IS equal
fourth is equal
the principle is that addition and multiplication are TRANSIENT meaning that regardless of the order of the numbers, the answer is the same IF THE DIGITS ARE THE SAME
2007-10-03 14:31:36 · answer #2 · answered by Mike 7 · 0⤊ 0⤋
902
1=by the commutative property of addition
2=associative property of multiplication
3=commutative property of multi
4=CPA
5=APA
903... almost all of it spent typing..
if i remember correctly when i was in 7th grade we did this too... i was in advanced math, but they shouldnt spend much time on this i hope
2007-10-03 15:04:37 · answer #3 · answered by nick_m18 1 · 0⤊ 0⤋
I don't know is she in advanced classes??? ( I am but I don't know how she learns or if it's easy or hard for her so I can't give a answer sorry.)
2007-10-03 14:29:34 · answer #4 · answered by Amber S 1 · 0⤊ 0⤋