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timofeeve [1]
3 years ago
10

Jackie’s dog weighed 4 6/9 pounds as a puppy. Now her dog weighs 8 3/4 pounds. How many more pounds does Jackie’s dog weigh now

then she did as a puppy?
Show Your Work!
Mathematics
1 answer:
ICE Princess25 [194]3 years ago
5 0

Answer:

4 1/12 kg

Step-by-step explanation:

8 3/4 - 4 6/9

= 8 27/36 - 4 24/36

= 4 3/36

= 4 1/12 kg

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Answer:  22 hours 11 minutes

<u>Step-by-step explanation:</u>

P=P_o\cdot e^{(kt)}\\\\\text{Since the initial population is doubled in 14 hours, then:}\\2P_o=P_o\cdot e^{k\cdot 14}\\2=e^{14k}\\ln\ 2=ln\ e^{14k}\\ln\ 2=14k\\\\\dfrac{ln\ 2}{14}=k\\\\0.0495=k\\\\\\\text{Now that the k-value has been determined, we can find the time when the}\\\text{population is tripled:}\\3P_o=P_o\cdot e^{0.0495t}\\3=e^{0.0495t}\\ln\ 3=ln\ e^{0.0495t}\\ln\ 3=0.0495t\\\\\dfrac{ln\ 3}{0.0495}=5\\\\22.19=t\\\\22\ hrs +0.19\ hrs

22\ hours + \bigg[\dfrac{19}{100}=\dfrac{x}{60}\bigg]\\\\22\ hours + 11\ minutes

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3 years ago
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How many significant figures will there be in the answer to the following problem? you do not have to solve the problem. 223.4 •
Irina-Kira [14]

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