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tiny-mole [99]
3 years ago
6

What is the heart rate recorded a few minutes after completing a workout?

Physics
2 answers:
DochEvi [55]3 years ago
8 0
Correct answer should be C
Naily [24]3 years ago
5 0
The answer is D, recovery heart rate
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We now have an algebraic expression with only one variable, which can be solved. Once we have that, we can plug it back into one
Len [333]

Answer:

A=1

B=-2

Explanation:

Part A and B of the question wasn't given, however, I attached the relevant parts to solve this question as follows.

From part B as attached, it shows that the right option is C which is

2A+3B=-4

Substituting B with 3A-5 then we form the second equation as shown

2A+3(3A-5)=-4

By simplifying the above equation, we obtain

2A+9A-15=-4

Re-arranging, then

11A=-4+15

Finally

11A=11

A=1

To obtain B, we already know that 3A-5 so substituting the value of A into the above then we obtain

B=3(1)-5=-2

Therefore, required values are 1 and -2

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Một chất điểm khối lượng m=200g chuyển
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