The equality used is Subtraction property of equality
Option A is correct
Step-by-step explanation:
We need to identify which option best explains or justifies Step 1.
Step 1 is: 
The given equation is: 
To get the equation for step 1 we need to subtract c on both sides of equation i.e using subtraction property of equality


So, The equality used is Subtraction property of equality
Option A is correct.
Keywords: Solving Quadratic Equations
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Answer:
if it was 50% off the cost would be $145.64
Step-by-step explanation:
291.29 / 1/2= 145.64
50% = 1/2
Answer: 17.50 give brainliest if it helps
Step-by-step explanation:
Answer:
dsgberhyujxgkloyjnhbgfvbhnjklkjhbgfdfghjkiopolkjhgfew
Step-by-step explanation:
<h3>
Answer: perimeter = 10+2x+xy</h3>
To get the perimeter, you add up all the outer sides
side1+side2+side3 = (5+x)+(5+x)+(xy) = 10+2x+xy
The like terms 5 and 5 add to 10. The other pair of like terms x and x add to 2x. There isn't anything to pair with xy, so we leave it as is.