4 years ago

Which expression has a positive value?

Mathematics

1 answer:

Leokris [45]4 years ago

3 0

Answer:

im pretty sure C. 3(-64-8) + 25 will give you a positive value

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Bill needs to find the area of the ground covered by a conical tent. The tent is 12 feet tall and makes a 70° angle with the gro

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Answer:

Step-by-step explanation:

To get the area of the cone we need to find the radius first.

tan 70=r/12

r=12tan 70

area of a circle is given by:

A=πr²

thus the area of the ground covered by the tent will be:

A=π(12tan70)²

The answer is

A] A=π(12tan70°)²

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3 years ago

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Gnom [1K]

(152.75 - 47) ÷ 11.75

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3 years ago

Vertex of f(x) = 1/2(x-2)^2-3

AlekseyPX

Vertex is (2,-3). H (which is 2) sign is always opposite and k stays the same

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3 years ago

If you can do this please let me know the answer below!!

dem82 [27]

Answer:

x=60

Step-by-step explanation:

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3 years ago

Read 2 more answers

The intensity of a light source at a distance is directly proportional to the strength of the source and inversely proportional

jolli1 [7]

Answer:

x= $\frac{16}{\sqrt[3]{2}+1 }$

Step-by-step explanation:

Q= illumination

I = intensity

Q= I/d^2

Q_total = $\frac{I_1}{d_1^2}+\frac{I_2}{d_2^2}$

= $\frac{I}{x^2}+\frac{2I}{(16-x)^2}$

now Q' = 0

⇒I ${-\frac{2}{x^3}}+\frac{4}{(16-x)^3}$

x= $\frac{16}{\sqrt[3]{2}+1 }$

[/tex] $\frac{1}{x^3} = \frac{2}{(16-x)^3}$

x= $\frac{16}{\sqrt[3]{2}+1 }$

is the required point

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3 years ago