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mafiozo [28]
3 years ago
13

An equation whose variables are polar coordinates is called a ____________

Mathematics
2 answers:
PolarNik [594]3 years ago
6 0

Answer with explanation:

Polar Equation : An equation whose variables are polar coordinates.

         Polar equation of a curve is denoted in terms of (r, theta).

  Where,

               r=\sqrt{x^2+y^2}\\\\\Theta =tan^{-1}\frac{y}{x}

x and y are abscissa and ordinate in x y plane.

Theta is angle made by line joining origin to point represented by , P(r, Theta) in Positive direction of X axis.

⇒r=Distance from origin to the point

Polar equation of Circle

⇒x²+y²=r²

x=r cos A

y=r sin A

Angle , A is made with positive direction of X axis from line joining origin to end point.

Murljashka [212]3 years ago
4 0
An equation whose variables are polar coordinates is called a polar equation. These equation are characterized by an r as a function an angle. Polar equations can be written in rectangular coordinates by certain relationships. An example of a polar equation would be r = 2sin∅.
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Alla [95]

Answer:

$226.57

Step-by-step explanation:

4 0
3 years ago
7
Marat540 [252]

Answer:

Plan A equation:   y = 10x + 30

Plan B equation:  y = x + 80

Plan C equation: y = 5x + 50

Plan A costs the same as Plan C in 4 months

Plan A is the better option if you use 0 - 4 GBs of data each month

Plan B becomes the better deal when 8 months pass

Step-by-step explanation:

<u>When does Plan A cost the same as Plan C?</u>

Set the equations equal to each other (the cost) and solve for x (time in months)

10x + 30 = 5x + 50

5x = 20

x = 4 months

<u>Which plan is best if you only use 0-4 GBs of data a month?</u>

Test the maximum and minimum values to check which plan costs less

At 0 GBs of data used per month

Plan A:  y = 0 + $ 30 = $30 total

Plan B: y = 0 +$80 = $80 total

Plan C: y = 0 + $50 = $50 total

At 4 GBs of data used per month

Plan A: y = $ 40 + $ 30 = $ 70

Plan B: y = $ 4 + $ 80 = $ 84

Plan C: y = $ 20 + $ 50 = $ 70

Comparing the plans at maximum and minimum amount of GBs used, only one plan has the lowest cost overall. Even though Plan C is the same price at 4 GBs as Plan A, when you use 0 GBs you will end up paying more in Plan C than Plan A. Therefore, Plan A is the better option

<u>When does Plan B become the best deal?</u>

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5 0
2 years ago
The answer to the problem i asked
guapka [62]
8(4x+5)=136
Multiply the number outside of the parenthesis(8) with the numbers inside the parenthesis(4x and 5).
32x+40=136
Subtract 40 from both sides
32x=96
Divide both sides by 32 so the only thing remaining on the side of the variable is only the variable itself.
Final Answer: x= 3
8 0
3 years ago
Braden has $75 to spend for t shirts online. If shipping is $3 , how many " t" t shirts can he buy if theshirts cost $ 8?
inysia [295]

Answer:

9 tshirts

Step-by-step explanation:

Money he had for t shirts= $75

Cost of shipping= $3

Money left for t shirts= $75-$3=$72

Cost of 1 t shirt= $8

We can find the answer with two ways:

1st way: tshirts of $8=1

tshirts of $72=72/8

=$9

2nd way: Cost ($) 8 72

T shirts 1 x

8/1=72/x

by cross multiply

x=72/8

x=9

7 0
3 years ago
The aspect of geography that examines physical characteristics of the Earth is known as ______________.
antoniya [11.8K]
<span>The aspect of geography that examines physical characteristics of the Earth is known as physical geography. The correct option among all the options that are given in the question is the third option or option "C".

Number of people in the year 2010 = 308.7 million
Number of people in the year 2000 = 281.4 million
Number of people by which the population grew = (308.7 - 281.4) million
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Percentage of change in the population = (27.3/308.7) * 100
                                                                = 8.84 percent.

</span>
5 0
3 years ago
Read 2 more answers
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