Answer:
The answer is B.
Step-by-step explanation:
All parallelograms that have congruent diagonals are rectangles.
Solve both equations for y:

Set the expressions equal to each other:

So, for every nonzero number a the system of equations has
one solution.
Slowest- 5.665 because it is 5 so it will round up.
Fastest- 5.669 will also round up to the nearest hundredth which is 5.67
Answer:
the answer is 4k^2+9k+108
Step-by-step explanation:
<h3>Answer:
49y^2 - 56</h3>
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Work Shown:
7y^2 + 7(6y^2 - 8)
7y^2 + 7(6y^2) + 7(-8)
7y^2 + 42y^2 - 56
49y^2 - 56