elissajones62406
elissajones62406 elissajones62406
  • 29-03-2017
  • Mathematics
contestada

Sandra's dog weighs 3 1\2 pounds. Each week he gains 2\3 of a pound.If he continues to gain this much weight each week, how much will he weight in 8 weeks

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AnonymousGiantsFan
AnonymousGiantsFan AnonymousGiantsFan
  • 29-03-2017
So, we need to multiply 2/3 × 8.

Make it 2/3 × 8/1.

2 × 8 = 16

3 × 1 = 3

16/3

16/3 = 5 1/5

3 1/2 + 5 1/5 = 8 7/10

8 7/10 is your answer.

Glad I could help, and good luck!
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irspow
irspow irspow
  • 29-03-2017
d(w)=3 1/2 +2w/3  change the left fraction to improper fraction

rule a b/c=(ac+b)/c

d(w)=7/2+2w/3  make a common denominator of LCM in this case 6

d(w)=(21+4w)/6

d(8)=(21+4*8)/6

d(8)=(21+32)/6

d(8)=53/6

d(8)=(48+5)/6

d(8)=8 5/6


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