jessie13
  • jessie13
Will Medal!Answer ASAP!! 1: All of the following expressions are equivalent except _____. 7 - x x - 7 - x + 7 7 + (- x) 2: Solve -16x = -80. -96 -64 -5 5 3: The solution to -45 = n/5 is _____. -9 9 225 -225
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
jessie13
  • jessie13
@phi
anonymous
  • anonymous
1.c
anonymous
  • anonymous
2.d

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More answers

jessie13
  • jessie13
do u know the last one? and what grade are u in?
anonymous
  • anonymous
I'm in 9th but no I don't know
jessie13
  • jessie13
oh okay but thanks any way?
phi
  • phi
Can you answer #1 ? do any look like they are the same expression (written in different ways) ?
jessie13
  • jessie13
D
phi
  • phi
you should know that you can change the order of when adding x+ -7 is the same as -7+ x and putting in parens suchas (-7) + x does not change it.
phi
  • phi
all the choices have +7 and -x being added except for one of the choices that adds -7 and +x
jessie13
  • jessie13
ok
jessie13
  • jessie13
but did @cool4u2001 get the answers right?
phi
  • phi
in Q1, which choice has a -7 in it ?
jessie13
  • jessie13
b
phi
  • phi
notice none of the other choices have -7 b is the "different" one
jessie13
  • jessie13
oh! so b is right?
phi
  • phi
yes, b for Q1 for Q2, what is -16* 5 ?
jessie13
  • jessie13
-80
phi
  • phi
so -16*5 = -80 -16*x = -80 x must be what ?
jessie13
  • jessie13
5
phi
  • phi
so d is the answer for Q2 btw, you find x by starting with -16 x = -80 divide both sides by -16 x= -80/-16 = 5
phi
  • phi
Q3 does not make sense. It looks like something was left out.
jessie13
  • jessie13
i fixed it!
jessie13
  • jessie13
all i know about it is that its not A
jessie13
  • jessie13
@phi
jessie13
  • jessie13
@phi
phi
  • phi
multiply both sides by 5
jessie13
  • jessie13
what do u mean?
phi
  • phi
\[ -45\cdot 5 =\frac{ n}{5} \cdot 5 \]
phi
  • phi
on the right side 5/5 simplifies to 1 and 1*n is just n you get -45*5 = n
jessie13
  • jessie13
-225?
phi
  • phi
yes
jessie13
  • jessie13
okay thanks for helping me!!!!
phi
  • phi
yw
jessie13
  • jessie13
thank so much i got 100%!!!!
jessie13
  • jessie13
@phi

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