You use substitution and trial and error to answer this, so for A, every time you see an X you'd replace it with 5, and every time you see a Y you'd replace it with -6. Luckily, the answer is a because after substitution, the sum is correct:
5 + (-6) = -1
(3 × 5) - (-6) = 21
Answer:
hold on...
Step-by-step explanation:
we are supposed to find
Which of these properties is enough to prove that a given parallelogram is also a Rectangle?
As we know from the theorem, if the diagonals of a parallelogram are congruent then the parallelogram is a rectangle.
The other options The diagonals bisect each other is not sufficient because in parallelogram diagonals always gets bisected , parallelogram becomes rectangles only if both the diagonals are of same length.
In a parallelogram The opposite angles and opposite sides are always equal.
Hence the correct option is
The diagonals are congruent.
We can start to solve this problem by using what we know. The recipe calls for 2/3 cup of flour per 1/4 batch of cookies. Now, If we want to write the rate as a complex fraction, we can replace the per with a division sign. This makes it become (2/3)/(1/4) or
Two to the second power times three to the third power