Question

Dom wrote the following steps to simplify the expression (x − y + 5y).

Step 1: x + 5y − y; using commutative property of addition
Step 2: x + (5y − y); using associative property of addition
Step 3: x − (5 + 1)y; using distributive property of addition
Step 4: x − (6)y; simplifying

Answer 1

Which step was incorrect, and what should be the correct step that Dom should use?

Step 3 was incorrect. Correct step: x + (5 − 1)y; using distributive property of addition

Step 2 was incorrect. Correct step: x − (5y − y); using associative property of addition

Step 2 was incorrect. Correct step: x + (5y + y); using associative property of addition

Step 3 was incorrect. Correct step: x − (−5 − 1)y; using distributive property of addition

Answer 2

Is it A

Answer 3

You are correct.

Answer 4

Good job :)

Answer 5

The figure below shows a transversal t which intersects the parallel lines PQ and RS.


Write a paragraph to prove that the measure of angle 4 is equal to the measure of angle 8.

Answer 6

http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0908_14/image0034e7349ab.jpg

Answer 7

I know you have to use the Corresponding Angles Postulate to prove it

Answer 8

Sorry, try asking someone else? I'm not good at paragraph proofs.