Hello, a chickens heart beats 280-315 times per minute.
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Answer:
Answer image is attached.
Step-by-step explanation:
Given rational expressions:

And the rewritten forms:

We have to match the rewritten terms with the given expressions.
Let us consider the rewritten terms and let us solve them one by one by taking LCM.

So, correct option is 3.

So, correct option is 1.

So, correct option is 2.

So, correct option is 4.
The answer is also attached in the answer area.
Answer:
-3
Step-by-step explanation:
-7 + 4 = -3
Answer: 25.13cm is the circumference of the diameter of 4cm.