anonymous
  • anonymous
@Directrix Concrete can be purchased by the cubic yard. How much will it cost to pour a slab 17 feet by 17 feet by 2 inches for a patio if the concrete costs $40.00 per cubic yard? a. $76.45 b. $71.36 c. $90.67 d. $87.56
Mathematics
schrodinger
  • schrodinger
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Directrix
  • Directrix
@clairvoyant1 How many feet in a yard? How many inches in a yard? With that info, we can get started on this problem.
Directrix
  • Directrix
Do you know this: How many feet in a yard? How many inches in a yard?
anonymous
  • anonymous
3?

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Directrix
  • Directrix
The idea is to change the given measurements into yards so that when we multiply to get the volume, what we get will be in cubic yards.
Directrix
  • Directrix
17/3 * 17/3 * 2/36 * 40 = ?
Directrix
  • Directrix
Copy this into the Google search box and the Google calculator will pop up with the answer: 17/3 * 17/3 * 2/36 * 40 =
Directrix
  • Directrix
Yes, 3 feet in a yard. 36 inches in a yard.
anonymous
  • anonymous
Solve the proportion for x.
1 Attachment
anonymous
  • anonymous
a) 1/5 b) 1/2 c) 5/3 d) 16/5
Directrix
  • Directrix
Cross multiply. 3*(9x) = 1* (2x + 5)
Directrix
  • Directrix
Directrix
  • Directrix
3*(9x) = 1* (2x + 5) 27x = 2x + 5 --> Solve for x.
Directrix
  • Directrix
25x =5 x = ?
anonymous
  • anonymous
Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x. f(x) = quantity x minus seven divided by quantity x plus two. and g(x) = quantity negative two x minus seven divided by quantity x minus one.
anonymous
  • anonymous
Hello you there?
phi
  • phi
you should make a new post for each question. It's easier to understand that way.
anonymous
  • anonymous
yea

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