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Tasya [4]
3 years ago
12

Pls help it is khan academy :)

Mathematics
1 answer:
Whitepunk [10]3 years ago
8 0

Answer:

4x-12

Step-by-step explanation:

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To calculate the cost of painting his silo, a farmer must find its height. The farmer uses a cardboard square to line up the top
tankabanditka [31]

Answer:

Height of the silo = 18 feet.

Step-by-step explanation:

From the figure attached BC is the length of the silo and the height of the farmer is 5 ft.

Farmer is standing at 8 ft distance from the silo.

From triangle AEC,

tan(∠CAE) = \frac{CE}{AE}

                 = \frac{5}{8}

m(∠CAE) = tan^{-1}(\frac{5}{8})

               = 32°

m∠BAE = 90° - 32° = 58°

From the triangle ABE,

tan58° = \frac{BE}{AE}

BE = 8tan58°

BE = 12.8 ft

Total height of the silo = BE + EC

                                         = 12.8 + 5

                                         = 17.8

                                         ≈ 18 ft          

Therefore, total height of the silo is 18 ft.

3 0
3 years ago
Which equation can be used to find the surface area of the cylinder?
ki77a [65]

Step-by-step explanation:

Surface Area of the Cylinder

= 2πr² + 2πrh

r = 4 in

h = 16 in

Surface Area :

= 2πr² + 2πrh

= 2π (4)² + 2π (4) (16)

<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>

6 0
3 years ago
Joey had eight pencils in the morning. He gave some pencils away to friends who needed them. To determine the number of pencils
pshichka [43]
Answer : Subtract



Hope it help you

Please mark me brianliest
6 0
1 year ago
What is the cost of 20pens is rs 1200,what is the cost of one pen​
myrzilka [38]

Answer:

rs 60

1200/20=60......

3 0
2 years ago
In the chemistry lab an experiment requires 500 mL of one ingredient to be mixed with 1000 mL of another. How many ounces is the
Shalnov [3]

Answer:

51

Step-by-step explanation:

1 mL = 0.034 fluid ounces

(500 + 1000) x 0.034

= 51 fluid ounces

3 0
3 years ago
Read 2 more answers
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