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Natasha_Volkova [10]
3 years ago
10

Please help with 2 and 3 for maths

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
8 0

Answer:2-4=

Step-by-step explanation:y-16-(-42)

y-16+16

y-32

y-16-(-22)

y-16+4

y-20

y-16-(02)

y-16

y-16-(42)

y-0

AnnyKZ [126]3 years ago
6 0

Answer:

The answer is 2-4

Step-by-step explanation:

You might be interested in
.
fredd [130]

Answer:

A

Step-by-step explanation:

28 + 8 is 26

6 0
2 years ago
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
3 years ago
Solve the proportion for x
S_A_V [24]

Answer:

8

Step-by-step explanation:

45 divided by 5 is 9 and what you do on the to you do on the bottom which means you would do 40 divided by 5 which you would get 8 as your answer.

7 0
3 years ago
Do 4-11 for brainliest questions are really easy.
nasty-shy [4]

Yes, yes here is the and your answer Tu respuesta es fácil, solo divídela entre 3 y ahí tienes tu respuesta. De nada por ayudarlo a resolver las preguntas 4 a 11

Step-by-step explanation:

6 0
3 years ago
Mrs. Kim wants to carpet her living room. She wants to place carpet over the whole room except for the tiled area by her door. H
Schach [20]
Please attach a picture 

3 0
3 years ago
Read 2 more answers
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