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Andru [333]
3 years ago
9

On a scale drawing of a dock for a marina, 1 inch equals 15 feet. the dock is 200 feet long. what is the length of the dock on t

he scale drawing?
Mathematics
1 answer:
Jlenok [28]3 years ago
7 0
Try drawing a scale chart and on one side theres 100 and same on the orhter 
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Please help!!!!!!!!!!
Gnoma [55]

Answer:

The surface of the prism is 84m²

Step-by-step explanation:

You have 4 figures here (two the same triangles)

you need to determine the surface of each and then sum it to one. This will be your final surface.

rectangles:

3*6= 18m²

5*6 = 30m²

4*6 = 24m²

triangles:

You need to determine the square of the triangles from the Heron's formula.

Heron's formula states that the area of a triangle whose sides have lengths a, b, and c is

S=\sqrt{s(s-a)(s-b(s-c)},

where s is the semi-perimeter of the triangle; that is,

s=\frac{a+b+c}{2}.

So the permimeter of the triangle is

2p=4+5+3 = 12m

p = 6m

S = \sqrt{p*(p-a)*(p-b)*(p-c)}  = \sqrt{6*(6-3)*(6-4)*(6-5)}  = \sqrt{6*3*2*1} =\sqrt{36} =6[m^{2} ]

So the surface of the prism is a total sum of all surfaces:

P = 18m²+30m²+ 24m²+2*6m² = 84m²

6 0
3 years ago
F = 2x + y<br> 3x + 5y = 45 x20 and y20<br> 2x + 4&lt;32
ipn [44]

Answer:

a

Step-by-step explanation:

6 0
3 years ago
Question:
Andrew [12]

Answer:

(0, -9)

Step-by-step explanation:

The y intercept is the y value when x =0

(0, -9)

4 0
3 years ago
Write a statement that indacates that the triangles in each pair are congruent
Wittaler [7]

Answer:

The answer would be C

Step-by-step explanation:

Because if you look at the triangles you can where they match up and if you look at the lines you can tell if they match up and C matches that`s how I did it well that`s how I do it when I do math

3 0
2 years ago
The value of a car decreases by 20 percent per year. Mr. Sing purchases a $22,000 automobile. What is the value of the car at th
andriy [413]

Answer:

not too sure but I think its C or D

6 0
3 years ago
Read 2 more answers
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