Answer:
7 to the second power... because 7 times is 49 and 49-49 is 0... so 7 to the second power
The question is asking to choose among the following choices that state the statement that is best described the expression 7x2y and base on my research and understanding, I would say that the answer would be "the sum of two product." I hope you are satisfied with my answer and feel free to ask for more
3=x as the answer would be the reciprocal
Answer:

Step-by-step explanation:
step 1
Find the value of x
we know that
If two triangles are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent
In this problem we have that
∆EGF~∆EML
so

substitute the given values

solve for x



step 2
Find MG
we know that

substitute

Answer:
-14x + 4y
Step-by-step explanation:
Step 1: Set up expression
(-10x - y) - (4x - 5y)
Step 2: Distribute negative
-10x - y - 4x + 5y
Step 3: Combine like terms
-14x + 4y