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Kitty [74]
3 years ago
13

Find the rate of change from the given table.

Mathematics
1 answer:
Ymorist [56]3 years ago
4 0
The rate of change would be D. 4
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John who is 5 ft tall is standing 20 feet away from a tree, and you measure the angle of elevation to be 38∘. How tall is the tr
fenix001 [56]

Answer:

The tree is 20.6 ft tall.

Step-by-step explanation:

Please check the attached graph.

From the diagram, it is clear that John is 5 ft tall is standing 20 feet away from a tree, making an angle of elevation to be 38⁰.

The diagram makes a right-angled triangle.

  • Given the angle = Ф = 38⁰
  • Adjacent = a = 5 ft
  • Opposite = b = 20 ft
  • Hypotenuse = Tree length = c  ?

Pythagorean Theorem:

For a right-angled triangle, with sides 'a' and 'b', the hypotenuse 'c' is defined as:

\:c=\sqrt{a^2+b^2}

substituting a=5, b=20

c=\sqrt{5^2+20^2}

c=5\sqrt{17}

c=20.6 ft

Thus, the tree is 20.6 ft tall.

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3 years ago
What is the value of the discriminant? 4x2+15x=3x-9
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Step-by-step explanation:

Use the values of  a ,  b , and  c  to find the discriminant.

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3 years ago
An elevator descends into a mine shaft at the rate of 6 m/min. If the descend starts from 20 meter above the ground level, how l
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60 minutes. Take how far it is above ground (20 m) and add it to the absolute value of how far it is below ground (340 m) to get 360 meters, which you divide by the rate of descent (6 m/min) to get 60 minutes.
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3 years ago
What is the slope of the line described by the equation below?
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This is in slope intercept form, or y=mx+b where m is slope.
m=10 in the given equation

Final answer: D
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A gold alloy contains 15 milligrams of gold for every 4 milligrams of copper. A jeweler uses 48 milligrams of copper to make the
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There are 180 milligrams of gold in the alloy

Step-by-step explanation:

because i know

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3 years ago
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