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Alika [10]
4 years ago
12

Ally is making a scale diagram of her classroom. She uses a scale factor of 3 centimeters per foot to draw the diagram. The actu

al length of the classroom is 18 feet, and its width is 20 feet. What is the area of the scale drawing of the classroom?
Mathematics
1 answer:
Inga [223]4 years ago
5 0
Area = 18ft x 20ft = (18/3)cm x (20/3)ft = 6cm x 6.67 cm = 40cm^2
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I need to go 1,373 miles but the plane travels at 575 miles per hour. how long would it take me to get to my destination?
-BARSIC- [3]

Answer:2.38782608695652173913043478260869565217

Step-by-step explanation:

you divide 1373 by 575

4 0
4 years ago
You operate a gaming website, www.mudbeast.net, where users must pay a small fee to log on. When you charged $4 the demand was 5
sertanlavr [38]
A) Demand function

price (x)          demand (D(x))

4                      540

3.50                  810

D - 540          810 - 540
----------- =  -----------------
x - 4               3.50 - 4

D - 540
----------- = - 540
x - 4

D - 540 = - 540(x - 4)

D = -540x + 2160 + 540

D = 2700 - 540x

D(x) = 2700 - 540x

Revenue function, R(x)

R(x) = price * demand = x * D(x)

R(x) = x* (2700 - 540x) = 2700x - 540x^2

b) Profit, P(x)

profit = revenue - cost

P(x) = R(x) - 30

P(x) = [2700x - 540x^2] - 30

P(x) = 2700x - 540x^2 - 30

Largest possible profit => vertex of the parabola

vertex of 2700x - 540x^2 - 30

When you calculate the vertex you find x = 5 /2

=> P(x) = 3345

Answer: you should charge a log-on fee of $2.5 to have the largest profit, which is $3345.




5 0
3 years ago
In New York a crowed subway has 375 passengers distributed between 5 cars. What is the unit rate for each subway car?
Andrews [41]
<h2>Answer:</h2><h2 /><h2>The unit rate is 75/1.</h2><h2 /><h2>Step-by-step explanation:</h2><h2 /><h2>To figure out this problem you have to divide. </h2><h2>375 divided by 5 is equal to 75. </h2><h2 /><h2>Therefore the unit rate is 75/1.</h2><h2 /><h2>Hope this helps and have a great day!!!</h2><h2 /><h2>:)</h2>
7 0
3 years ago
Special right triangles, find x and y
egoroff_w [7]

Answer:

The answer to your question is x = 17.32; y = 8.67

Step-by-step explanation:

Process

1.- Use trigonometric functions to find x and y

   a) sin Ф = \frac{opposite side}{hypotenuse}

      Ф = 60°

      opposite side = 15

      hypotenuse = ?

     hypotenuse = \frac{opposite side}{sin \alpha }

     hypotenuse = \frac{15}{sin 60}

     hypotenuse = \frac{15}{0.87}

            hypotenuse = 17.32

     b) cosФ = \frac{y}{hypotenuse}

         y = hypotenuse x cos 60

         y = 17.32 x 0.5

                y = 8.67

5 0
3 years ago
I just need all the numbers on top in feet on the graph please
sattari [20]

Answer:

2.5, 5, 7.5

Step-by-step explanation:

Count.

3 0
3 years ago
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