Classify the following triangle. Check all that apply. 60 60 60

Mathematics

2 answers:

mel-nik [20]4 years ago

3 0

Acute equilangular triangle

aleksklad [387]4 years ago

3 0

Well, I’m assuming the three 60’s are showing the angle measurements. The sum of all the angles in all triangles have to equal 180 degrees. 180/3 is 60. Therefore, if all of the angles in this triangle are 60 degrees, the triangle is considered an equilateral triangle.

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Persons A and B are at the beach, their eyes are 5 ft and 6 ft, respectively, above sea level. How many miles farther out is Per

Marysya12 [62]

Answer:

The radius of the earth is something like 4000 miles= about 20,000,000 feet. (Look up the exact radius of the earth to calculate the correct number yourself, I'm too lazy!)

The horizon is where you're looking at a tangent to the earth's surface. Since the tangent to a circle is perpendicular to the radius (if we assume the earth is a perfect sphere), we can set up a right angled triangle:

H...P

Where C is the centre of the earth, H is the horizon, and P is the person. CH = 20,000,000 feet. CP = 20,000,005 feet (in the case of the 5' person, that'd be me :) And there is a right angle at H.

So using Pythagoras' theorem, if d = PH, then:

d^2 = 20,000,005^2 - 20,000,000^2

=> d^2 = 200,000,025

=> d = 14142 feet (just under 3 miles)

For a 6' person:

d^2 = 20,000,006^2 - 20,000,000^2

=> d^2 = 240,000,036

=> d = 15491 feet

So the difference is 1349 feet or 0.256 miles

Repeat this exercise with the real radius of the earth (in feet) to get the correct answer, but it'll be pretty close to what I've given here

4 0

3 years ago

What is u? 70° 1100 U 100° U =

Goshia [24]

Answer:

it is 4

Step-by-step explanation:

8 0

3 years ago

Use substitution to solve 3x-2y=11 and x+2y=9

Ira Lisetskai [31]

Solve the second equation for 2y.
.. 2y = 9 -x
Substitute that into the first equation.
.. 3x -(9 -x) = 11
.. 4x -9 = 11
.. 4x = 20
.. x = 5
Using our expression for 2y above,
.. 2y = 9 - 5
.. y = 4/2 = 2

The solution is (x, y) = (5, 2).