Question

will medal
what is the best way to classify each question?

A) Identity
B) Contradiction
C) Neither

Answer 1

1. 5X - 20 = 2(3X - 10)
2. 4X - 16 - 2X = 2(X-8)

Answer 2

3. 6X - 15 = 3(2x - 6)
4. 5X -3(X -4) = 2(X - 6)

Answer 3

Do you know what identits and contradictions are in mathematic terms?

Answer 4

0.0
lets see

Answer 5

help?

Answer 6

An identity is when the equation is true, such as 3 = 1 + 2. A contradiction is when the equation is not true, such as 3 = 4 x 1. If you simplify the equations given, you should be able to solve whether or not they are identities or contradictions

Answer 7

@kweenlexis help?

Answer 8

help simplify

Answer 9

1. 5X - 20 = 2(3X - 10)
If we simplify the second half, we will be able to solve the problem. The only step we need to do with this one is distribute, so we just multiply that which is in the parenthesis by the number outside, in this case 2.
1. 5x - 20 = 6x - 20
is the simplified version for the first problem

Answer 10

ok...

Answer 11

As we can see, 5x - 20 does not equal 6x - 20, so that would be a contradiction

Answer 12

ok

Answer 13

2. 4X - 16 - 2X = 2(X-8)
4x and -2x are like terms, so we can combine them together to create 2x.
2. 2x - 16 = 2(x - 8)
when we use the distributive property, we can simplify the second half to
2. 2x - 16 = 2x - 16
So is this an identity or a contradiction

Answer 14

oh my bad i was doing some thing :(

Answer 15

its ok

Answer 16

so 2. is a contradiction

Answer 17

cause the sides are the same yet they're opposite

Answer 18

wait is 2. identity

Answer 19

Yes, 2. is an identity. Are you starting to get the hang of it?

Answer 20

ya, I just saw the question wrong

Answer 21

can you help me with the others?

Answer 22

sure

Answer 23

thanks i'll give you a medal after

Answer 24

hi

Answer 25

hello?

Answer 26

3. 6X - 15 = 3(2x - 6)
this is just a one step distributive, so the second half will be
6x - 15 = 6x - 18
Identity or contradiction?
4. 5X -3(X -4) = 2(X - 6)
This one is more complicated, as there are parentheses on both sides. We just need to tackle them one at a time.
The first half will come out as 5x - 3x - 12, and then we can combine the like terms (5x and 3x) so that the first half will be 2x - 12
The second half is just distribution, so 2x - 12.
The equation ends up simplifying to 2x - 12 = 2x - 12
Identity or contradiction?

Hope I helped!

Answer 27

3. is Identity

Answer 28

sorry I meant for 4

Answer 29

4. is identity and 3. is...

Answer 30

3. is contradiction or neither?

Answer 31

3. is a contradiction.
Good job!

Answer 32

thank you