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kkurt [141]
4 years ago
15

Why do we say that light travels in straight lines? Is it strictly accurate to say that a laser beam provides a per- fectly stra

ight line for purposes of surveying? Explain.
Mathematics
1 answer:
Aliun [14]4 years ago
5 0

Answer:

Step-by-step explanation:

Light is considered to be without mass, but it has energy. According to Einstein, energy can be

equivalently presented as mass. Mass is also affected by gravity, but near planets, this effect is

so small that it can be ignored and so we say that light travels in a straight line.

The above statement does not hold true when light passes near a star. A star possesses a very

high gravity field that bends light such that the change of direction is observed.

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-3x + 6y = 18
mote1985 [20]

Step-by-step explanation:

-3x + 6y = 18

-3x = 6y+14

a) the slope of the 1st equation = -(-3)/6 = ½

b) the slope of the 1st equation = -3/6 = -½

c) they are niether parallel nor perpendicular

3 0
3 years ago
Which term of a AP 5 , 13 , 21 ,... is 181?
Sauron [17]
Here,a(n) =  a + (n-1)d
Here, a = 5, d = 12-5 = 8, a(n) = 181
Substitute this values in to the expression,

181 = 5 + (n-1)8
181-5 = 8n-8
176+8 = 8n
n = 184/8
n = 23

So, it is 23th term of that Arithmetic Progression.

Hope this helps!

7 0
3 years ago
Jordan has 3 toy cars. Jake has 10 times as many cars as Jordan does. How many cars does Jake have?
Viefleur [7K]

Answer:

Jake has 30 cars

Step-by-step explanation:

3 times 10 equals 30

7 0
4 years ago
farmer joe is enclosing a rectangular area on his arm for his chicken with 200 feet of fencing that he recently acquired in a tr
Llana [10]
For this case, the area is given by:
 A = x * (200-2x)
 Rewriting:
 A = 200x-2x ^ 2
 Deriving the expression we have:
 A '= 200-4x
 Equaling zero we have:
 200-4x = 0
 We clear x:
 4x = 200
 x = 200/4
 x = 50 feet
 Then, the maximum area is:
 A (50) = 50 * (200-2 * 50)
 A (50) = 5000 feet ^ 2
 Answer:
 
the maximum possible area that can be enclosed with his 200ft of fencing is:
 A
 (50) = 5000 feet ^ 2
8 0
3 years ago
Your grocery bill is 45$. Because of tax , you have to add 10%of that. What is your total cost?
Oduvanchick [21]

Answer:

$49.50

Step-by-step explanation:

You take the $45 and multiply it by 10% (tax). That comes out to $4.50. Then, you take the $45.00 (grocery bill) and add it to $4.50 (10% tax)

$45.00 + $4.50=$49.50

4 0
3 years ago
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