Question

HELP PLEASE!!(:

Answer 1

Karen wrote the following steps to simplify the expression: 4 – (2x + 3x – 1).

Answer 2

Which step of justification is incorrect, and what should the justification for that step be to simplify the expression?
Step 2; Commutative Property of Addition

Step 3; Associative Property of Multiplication

Step 4; Distributive Property

Step 1; Multiplication Property of Equality

Answer 3

(Well you have to solve the problem in order to know what she did wrong) Look at the equation. From what you have learned, what do you have to do first?

Answer 4

actually scratch that, lets go through the steps of what she did

Answer 5

are you able to see the attachment?

Answer 6

I am able to see it

Answer 7

What was the first step she did? It was the distributive property, do you know how to do that?

Answer 8

I am now seeing these messgaes cuz openstudy is SLOW

Answer 9

nd yes I know how to do dist. property

Answer 10

Okay its fine, so did this girl do it correctly??

Answer 11

shouldn't it be 4 -( 5x-1)

Answer 12

No, thats not correct for this step. She has the distributive property correct

Answer 13

oh okay

Answer 14

So go to the next step. Does she have that correctly?

Answer 15

No

Answer 16

well I don't think so

Answer 17

correct she has that one wrong :) and thats your answer

Answer 18

yayyy! thank you(:

Answer 19

Your welcome :)

Answer 20

can you help me with another please?

Answer 21

I can try, this one almost had me stuck haha. I'm not the best at math but I'll give it a shot

Answer 22

okay thanx!

Answer 23

Given: 3x + 1 = 2 + 2x – 4

Prove: x = –3

Given the equation 3x + 1 = 2 + 2x – 4, use the commutative property to rearrange the terms so that like terms are next to one another. This gives the equation 3x + 1 = 2 – 4 + 2x. Then use the associative property of addition to group the like terms. This gives the equation 3x + 1 = (2 – 4) + 2x. Next, combine like terms to get the equation 3x + 1 = – 2 + 2x. Use the subtraction property of equality to subtract 2x from both sides of the equation. This gives the equation x + 1 = – 2. Then use the _________________________ to subtract 1 from both sides of the equation. This gives the solution x = –3. Therefore, given the equation 3x + 1 = 2 + 2x – 4, x is equal to –3.

Which justification was left out of the paragraph proof above?

Answer 24

I hate these-_- they are so hard

Answer 25

@jewelgurl ??

Answer 26

one moment (I'll get back to you in a second. I'm trying to multitask ahhaha)

Answer 27

lol okay

Answer 28

@flykicks ... any ideas?

Answer 29

Okay, I'm so sorry... i have absolutely no clue. :(