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VashaNatasha [74]
3 years ago
6

A viewfinder has a triangular lens. Some of the measurement of the length are shown below. Which of the following best represent

s the length of a?

Mathematics
1 answer:
S_A_V [24]3 years ago
5 0

Answer:

A

Step-by-step explanation:

First, we need to find the unknown angle of the triangle.

40 + 20 = 60

180 - 60 = 120

So the unknown angle is 120.

Then, we can use the law of sines to create a proportion.

sin(120)/8 = sin(40)/a

Then, we can simplify this.

a is about 5.9, or answer choice A.

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VARVARA [1.3K]

Answer:

YES

Step-by-step explanation:

cause 12.6 / 4.5 = 2.8

and 4.2 / 1.5 = 2.8

3 0
3 years ago
A skydiver weighing 180lbs (including equipment) falls vertically downward from an altitude of 5000 ft and opens the parachute a
Annette [7]

<span>For the presented problem, the solution would be</span><span> </span><span>v</span><span>(0)=0</span><span>v(0)=0</span><span> is</span><span>v</span><span>(</span><span>t</span><span>)−</span><span>mgb</span><span>=</span><span>e</span><span>−</span><span>b</span><span>/</span><span>m</span><span>⋅</span><span>t</span><span>(</span><span>v</span><span>0</span><span>−</span><span>mgb</span><span>)</span><span>⟺</span><span>v</span><span>(</span><span>t</span><span>)=</span><span>mgb</span><span>(</span><span>1−</span><span>e</span><span>−</span><span>b</span><span>/</span><span>m</span><span>⋅</span><span>t</span><span>)</span><span>≈</span><span>g</span><span>⋅</span><span>t</span><span>−</span><span>gb</span><span>2</span><span>m</span><span>⋅</span><span>t</span><span>2</span><span>, with the following given, </span><span>
m</span><span>=180[lb]=81.6[kg]</span><span> </span>

<span>g</span><span>=9.81[m/s</span><span>2</span><span>]</span><span />

<span>b</span><span>=0.75[kg</span><span>⋅</span><span>m/s</span><span>2</span><span>⋅</span><span>s/ft]=0.2286[kg/s]</span><span />

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7 0
3 years ago
How many such cubes are required to completely pack the prism without any gap or overlap?
ziro4ka [17]

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Step-by-step explanation:

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3 years ago
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Please help no explanation
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Answer:

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Step-by-step explanation:

5 0
3 years ago
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Find the measures of angles 1, 2, and 3​
Nastasia [14]
1 = 60
2 = 120
3 = 25

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180-120=60

straight lines have total angles of 180
180-60=120

triangles have total angles of 180
120+35=155
180-155=25
6 0
3 years ago
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