anonymous
  • anonymous
help please!
Mathematics
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anonymous
  • anonymous
help please!
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Astrophysics
  • Astrophysics
What's the question?
anonymous
  • anonymous
im gonna post it now, give me a sec :)

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anonymous
  • anonymous
Kelly was building a bed for her dollhouse. She used her bed, which is 4 feet × 6 feet, as a guide. She scaled down the dimensions of her bed by a factor 1 over 5. What are the dimensions of the model bed she built? 0.8 foot × 1.2 feet 0.4 foot × 0.6 foot 0.08 foot × 0.12 foot 0.04 foot × 0.06 foot
anonymous
  • anonymous
Astrophysics
  • Astrophysics
|dw:1438409758922:dw| just multiply the dimensions by 1/5.
Michele_Laino
  • Michele_Laino
hint: you have to multiply the dimensions of the bed of Kelly by a factor 1/5= 0.2
anonymous
  • anonymous
so i do... 4 x 1.5 and 6 x 1.5?
Astrophysics
  • Astrophysics
It's 1/5 not 1.5
Michele_Laino
  • Michele_Laino
hint: 4*(0.2)=... 6*(0.2)=...
anonymous
  • anonymous
ok so i divide it 4 / 1/5 .. like that?
Michele_Laino
  • Michele_Laino
hint: 4*(1/5)=...? 6*(1/5)=...?
Astrophysics
  • Astrophysics
\[4 \times \frac{ 1 }{ 5 } = \frac{ 4 }{ 5 } ft\] do so similarly with the other, but you could also do it the way Michele has showed you \[\frac{ 1 }{ 5 } = 0.2\] so you can do 4*(0.2) and 6*(0.2)
anonymous
  • anonymous
oh ok :)
anonymous
  • anonymous
i got 0.8 and 1.2
Astrophysics
  • Astrophysics
Yeah
anonymous
  • anonymous
ok yay!
anonymous
  • anonymous
next question :)
anonymous
  • anonymous
The seventh-grade class is building target areas for a PE activity. The bases for the game will be circular in shape. The diameter of each circle is 5 feet. Approximately how many square feet of the turf need to be painted for a base circle? Use 3.14 for π and round your answer to the nearest tenth. 15.7 square feet 19.6 square feet 42.8 square feet 78.6 square feet
Astrophysics
  • Astrophysics
Ok so draw a diagram and label it first
anonymous
  • anonymous
how
anonymous
  • anonymous
anonymous
  • anonymous
i got 9.4
anonymous
  • anonymous
anonymous
  • anonymous
Im thinking it's 6ft∗π it's 9.4 6ft*pi/2=9.42=9.4 @Astrophysics
Astrophysics
  • Astrophysics
Where is the 6ft coming from? Do you really think that is true, check your answer choices, it's not even an option
anonymous
  • anonymous
no i think the answer is 9.4
Astrophysics
  • Astrophysics
You're just looking for the area of a circle \[A = \pi r^2\] where r is the radius, which is half the diameter.

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