Sorry i am late to the party but the snawer for the first problem is SAS. We know that segment AD is congruent to segment CD becausse of those tick marks. We also know that the angles towards the bottom of the diagram are congruent because they have the angle symbols. Finally BD=BD because of the reflexive property. We have a side an equal angle and finally another side.
Number 2 is SSS. Segment PR is congruent to Segment NQ because of the tick marks (1 line of tick marks.) In addition, PN=RQ because they both have 2 tick marks. Lastly we know PQ=PQ because of the reflexive property. We have a side, a side, and another side.
Yes, Heather is correct. The expressions are not equivalent
<em><u>Solution:</u></em>
Given that,
Heather says, the following expressions are not equivalent

Because one expression has a term that is subtracted and the other does not
<em><u>Combine the like terms in first expression:</u></em>

<em><u>Let us first expand the second expression</u></em>
By distributive property
a(b + c) = ab + bc
Therefore,

<em><u>Thus the two expressions are:</u></em>

Yes both the expressions are not equivalent
Because, in first expression 2x is added to 8
But in second expression, 8 is subtracted from 2x
Thus heather is correct
Answer:
I'm not sure what X or Y equals, But I'm pretty sure this could help!!
1. 4x + 16
2. 8x + 32
3. 2x + 8
Answer:
The first one, 2 square+ 3 squared= <em>d </em>squared
Step-by-step explanation:
The theory for finding the hypotenuse of a triangle is:

Answer: 27.987
Explanation: if x is 10.9 then you start with 0.207+2.1^3(10.9-7.9). You start with (10.9-7.9) because it’s in parentheses (PEMDAS) so 10.9-7.9=3 then you do 2.1^3= 9.26 now you have 0.207+9.26*3 so you multiply 9.26*3=27.78 finally you have 0.207+27.78= 27.987