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WITCHER [35]
3 years ago
13

3 + 12c - 4c What is the answer I need help?

Mathematics
1 answer:
HACTEHA [7]3 years ago
7 0
Your answer is 3 + 8c!!
You might be interested in
Rewrite the Cartesian equation y=-3 as a polar equation.
andreev551 [17]

r

sin

θ

=

−

3

Explanation:

Imagine we have a point  

P

with Rectangular (also called Cartesian) coordinates  

(

x

,

y

)

and Polar coordinates  

(

r

,

θ

)

.

The following diagram will help us visualise the situation better:

https://keisan.casio.com/exec/system/1223526375

https://keisan.casio.com/exec/system/1223526375

We can see that a right triangle is formed with sides  

x

,  

y

and  

r

, as well as an angle  

θ

.

We have to find the relation between the Cartesian and Polar coordinates, respectively.

By Pythagora's theorem, we get the result

r

2

=

x

2

+

y

2

The only properties we can say about  

θ

are its trigonometric functions:

sin

θ

=

y

/

r

⇒

y

=

r

sin

θ

cos

θ

=

x

/

r

⇒

x

=

r

cos

θ

So we have the following relations:

⎧

⎪

⎨

⎪

⎩

r

2

=

x

2

+

y

2

y

=

r

sin

θ

x

=

r

cos

θ

Now, we can see that saying  

y

=

−

3

in the Rectangular system is equivalent to say

r

sin

θ

=

−

3

Answer link

Jim G.

May 19, 2018

r

=

−

3

sin

θ

Explanation:

to convert from  

cartesian to polar

∙

x

x

=

r

cos

θ

and  

y

=

r

sin

θ

⇒

r

sin

θ

=

−

3

⇒

r

=

−

3

sin

θ

4 0
2 years ago
Please answer the picture
dimaraw [331]
The area is equal to 230 CM.
area for rectangle :
area = width times length
area = 7 x 20 = 140CM
area for triangle:
area = 1/2 times base times height
area = 1/2 x 20 x 9 = 90CM

ADD:
140+90 = 230 CM
3 0
2 years ago
Read 2 more answers
If 60 minutes equals one hour, which expression would you use to find the number of
Kisachek [45]
Answer is: 60x=240
240/60=40
7 0
3 years ago
Help me on my geometry hw it’s due in 25 minutes
icang [17]

Answer:

now just half the first triangals answers

Step-by-step explanation:

x =21

y=24

<u>TH</u>=24          <u>PQ</u>=12

<u>RH</u>=24          <u>NQ</u>=12

<u>RT</u>=21            <u>NP</u>=10.5

>T=80            >P=80

>H=20           >Q=20

>R=80           >N=80

8 0
3 years ago
Read 2 more answers
Solve n÷6&gt;2<br> . Graph the solution
balu736 [363]

Answer:

n>12

Step-by-step explanation:

i just put it in symbolab

5 0
2 years ago
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