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spin [16.1K]
3 years ago
11

The ice at a certain hockey rink is made by freezing water that is 1.5 inch deep. how many gallons of water does it take? approx

imate the rink as a 200 ft by 85 ft rectangle
Mathematics
1 answer:
storchak [24]3 years ago
5 0

The rink has a dimension of 200 ft* 85 ft = 17000 ft^{2}

depth = 1.5 inch that becomes \frac{1.5}{12} = 0.125 ft

So total volume of the water required = 17000* 0.125 = 2125 ft^3

Now 1 cubic foot of water= 7.480 gallons

Hence total gallons required are 2125 * 7.480 gallons = 15895 gallons.


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Quadrilateral PQRS is a square whos side length is 10. Let X and Y be points outside the square so that XQ = YS = 6 and XP = YR
erik [133]

Answer:

392

Step-by-step explanation:

Triangles XQP and YRS are right triangles because triples 6, 8, 10 are Pythagorean triples.

Extend lines XQ, YR, YS and XP and mark their intersection as A and B.

Quadrilateral XAYB is a square because all right triangles PXQ, QAR, RYS and SBP are congruent (by ASA postulate) and therefore

  • all angles of the quadrilateral XAYB are right angles
  • all sides of XAYB are congruent and equal to 6 + 8 = 14 units.

Segment XY is the diagonal of the square XAYB, by Pythagorean theorem,

XY^2=XA^2+AY^2\\ \\XY^2=14^2+14^2\\ \\XY^2=196+196\\ \\XY^2=392  

3 0
3 years ago
Minerva starts a savings account with $50. The interest on the account balance is compounded annually. The graph below shows the
rodikova [14]

We can set up this equation using this formula:

a = p(1 + r/n)^nt

p = starting amount.

r = interest.

n = number of times it's compounded in a year

t = years

We'd set it up like this:

a = 50(1 + ?/1)^1(12)

Because we're missing the amount of interest, it would be impossible to tell what the amount would be after 12 years.


6 0
3 years ago
Need help<br> Pleaseeeee
fomenos

Answer:

164 m^2

Step-by-step explanation:

You can think of the shaded area in different ways. One of the ways is the entire outer colored rectangle minus the area of the small white rectangle inside.

The large colored rectangle is 12 m by 15 m.

The inner rectangle is 8 m tall. The width is 12 m - 5 m - 5 m = 2 m

A = 12 m * 15 m - 2 m * 8 m

A = 180 m^2 - 16 m^2

A = 164 m^2

4 0
3 years ago
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Step-by-step explanation:

One is in the hundreds and one is in the thousands. 100x10=1000

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