3 years ago

I’ll give u brainliest if you help with the answer :)

Mathematics

1 answer:

Naddik [55]3 years ago

8 0

Answer:

4712.39

Step-by-step explanation:

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You are standing on top of a 50 foot cliff over looking a pond. The angle of depression from you to the pond is 47 degrees. How

Bingel [31]

Answer: 97

Step-by-step explanation: hope this is right.

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3 years ago

g A 5 foot tall man walks at 10 ft/s toward a street light that is 20 ft above the ground. What is the rate of change of the len

vredina [299]

Answer:

$-\frac{10}{3}ft/s$

Step-by-step explanation:

We are given that

Height of man=5 foot

$\frac{dy}{dt}=-10ft/s$

Height of street light=20ft

We have to find the rate of change of the length of his shadow when he is 25 ft form the street light.

ABE and CDE are similar triangle because all right triangles are similar.

$\frac{20}{5}=\frac{x+y}{x}$

$4=\frac{x+y}{x}$

$4x=x+y$

$4x-x=y$

$3x=y$

$3\frac{dx}{dt}=\frac{dy}{dt}$

$\frac{dx}{dt}=\frac{1}{3}(-10)=-\frac{10}{3}ft/s=-\frac{10}{3}ft/s$

Hence, the rate of change of the length of his shadow when he is 25 ft from the street light= $-\frac{10}{3}ft/s$

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3 years ago

8 + 3g ≥ 5 pplllllllzzzzz heeeelllppp fast!!!

timofeeve [1]

11g greater than 5

Step-by-step explanation:

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3 years ago

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(x + 21)°<br> 137°<br> find the value of x.

pantera1 [17]

Answer:

x=116

Step-by-step explanation:

subtract 21 on both sides

5 0

3 years ago

Find the area of a circle circumscribed about an equilateral triangle whose side is 18 inches long

beks73 [17]

let's recall that an equilateral triangle has all interior angles of 60°.

Check the picture below.

so as you can see, 2√3 = x = r, namely the radius of the circle.

$\bf \textit{area of a circle}\\\\ A=\pi r^2\qquad \qquad \implies A=\pi (2\sqrt{3})^2\implies A=\pi (2^2)(\sqrt{3})^2\implies A=12\pi$

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3 years ago