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Mariana [72]
3 years ago
13

the coordinates of the endpoints of BC are B(3,2) and C(8,17). Point D is on BC and divides it such that BD:CD is 3:2. What are

the coordinates of D
Mathematics
1 answer:
eduard3 years ago
3 0
Snsjdnsndnxnendndnfbdnxndjdnxjxhsbsbshxhxhdhd
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1. The function of lenses is based on the law of refraction. A light beam is traveling from the medium 1 where its speed is V1,
masha68 [24]

Answer:

The index of refraction for Medium 2 would be 1.25

Step-by-step explanation:

We have the following data:

Speed of light in Medium 1 = V₁

Speed of light in Medium 2 = V₂

The speed of Light in Medium 2 is related to speed of light in Medium 1 as:

V₂ = 0.8 V₁

Moreover, it is given that Medium 1 is air with index of refraction equal to 1. i.e.

n₁ = 1

We need to find the index of refraction for medium 2. Lets name it is as n₂.

Snell's law related the above mentioned 4 quantities by following relation:

The ratio of indices of refraction of 2 mediums is equivalent to the reciprocal of ratio of  phase velocities in those 2 mediums. Mathematically, this can be written as:

\frac{n_{1}}{n_{2}} = \frac{V_{2}}{V_{1}}

Substituting the values we have gives us:

\frac{1}{n_{2}}=\frac{0.8V_{1}}{V_{1}} \\\\\frac{1}{n_{2}}=0.8\\\\ 1=0.8n_{2}\\\\\frac{1}{0.8}=n_{2}\\\\ n_{2}=1.25

This means, the index of refraction for Medium 2 would be 1.25

3 0
3 years ago
Please help! I can't figure this out!
ipn [44]

Answer:

1 & -1

Step-by-step explanation:

f(x) = g(x)

Find the inputs for which outputs are equal

Both outputs are 1 when x = -1

Both outputs are -7 when x = 1

6 0
3 years ago
What is the domain of the function on the graph
sergey [27]

Answer:

<h3>Domain [-3 , ∞ ]</h3>

Step-by-step explanation:

Domain is the set of all inputs for which the given function is defined.

graphically it represents the shadow of the graph taken on the x axis from above and below the x axis

Here is the shadow will be formed from -3 till +∞, hence we have our domain  as [-3 , ∞ ]

5 0
1 year ago
Solve each system by elimination. 3x - 2y = 1 2x + 2 y = 14
Paha777 [63]
Add 3 and 12 , cancel -2 y+2y and and add 14 and 14
3x-2y=14
12x+2y=14
15x=28
Divide both sides by 15
X=28/15
3x 28/15 -2y=14
Y=-21/5
(X,y)=28/15, -21/5
3x 28/15 -2x(-21/5)=12x 28/15 +2x(-21/5)=14
14=14=14
(x, y)=(28/15, -21/5) is the answer
6 0
3 years ago
Graph f(x) = 3x + 2 <br> PLEASE HURRY
PtichkaEL [24]

Answer:

See attached

Step-by-step explanation:

<u>Given</u>

  • f(x) = 3x + 2

The graph for the function is attached

5 0
3 years ago
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