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kramer
3 years ago
14

Lake Circulo is a large, circular lake with a walking path around it. The path is 25.12 miles long. What is the approximate area

of the lake?
Mathematics
1 answer:
dexar [7]3 years ago
6 0

Answer:

50.4 square miles

Step-by-step explanation:

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Don’t mind the already picked answer..i don’t understand this question though
Tatiana [17]
The answer is = because all of the other dimensions to the triangles are equal.
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A. 75.36 m2<br> B. 12 m3<br> C. 25.12 m3<br> D. 72 m2<br> E. 144 m2
yarga [219]
The answer to this question is E.
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3 years ago
8. The loudness of a sound depends on_____. A. The width of the wave B. The brightness of the wave C. The length of a sound wave
cupoosta [38]

Answer:

D

Step-by-step explanation:

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5 0
3 years ago
An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on
butalik [34]

Answer:

90 engines must be made to minimize the unit cost.

Step-by-step explanation:

Vertex of a quadratic function:

Suppose we have a quadratic function in the following format:

f(x) = ax^{2} + bx + c

It's vertex is the point (x_{v}, y_{v})

In which

x_{v} = -\frac{b}{2a}

y_{v} = -\frac{\Delta}{4a}

Where

\Delta = b^2-4ac

If a>0, the minimum value of the function will happen for x = x_v

C(x)=x²-180x+20,482

This means that a = 1, b = -180, c = 20482

How many engines must be made to minimize the unit cost?

x value of the vertex. So

x_{v} = -\frac{b}{2a} = -\frac{-180}{2(1)} = 90

90 engines must be made to minimize the unit cost.

3 0
3 years ago
Name two points that are reflections of each other across the y-axis.
zheka24 [161]

Answer:

(1,1), (-1,1)

Step-by-step explanation:

To reflect a point over the x-axis, simply make its x-value negative. So, we can take the sample point of (1,1), make its x-value negative, and get (-1,1).

5 0
3 years ago
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