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Nadusha1986 [10]
3 years ago
9

I need help on this question!

Mathematics
1 answer:
Romashka [77]3 years ago
4 0
It would be C because if you plug all the x-values in to the equation, it would get the same y values, which would satisfy the equation.
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Write the following polar equation in Cartesian coordinates:
maks197457 [2]
Remember that transformation between Cartesian and polar system are:
x=r*cos(α)
y=r*sin(α)
From this we can conclude that:
r=√(x^2 + y^2)

Using trigonometry transformations we can write:
r=sin(2α) = 2sin(α)cos(α)
Now we can multiply both sides with r^2:
r^3 = 2(r*sin(α))*(r*cos(α))

Now using some replacements we can write:
(x^2 + y^2)^(3/2) = 2*x*y
5 0
3 years ago
80 POINTS FOR ALL 5 ANSWERS AND BRAINLEIEST
Agata [3.3K]

Answer:

Question 2 is y = 1/2 x - 2

Question 3 is y=-2x+4

Question 4 is y = x + 3

 Your other questions don't have pictures of the graph so I can't solve them sorry.  Have a good day.

4 0
3 years ago
Read 2 more answers
What is (f - g)(x)?<br>f(x) = 5x<br>g(x) = 3x2 - 8x​
erma4kov [3.2K]

Answer:

(5x)-(3x^2-8x)=-3x^2+13x

Step-by-step explanation:

(f-g)(x)=f(x)-g(x)

Using this, we can subtract and find the answer.

(5x)-(3x^2-8x)=-3x^2+13x

6 0
3 years ago
A boat traveled 240 miles downstream and back. The trip downstream took 12 hours. The trip back took 24 hours. What is the speed
RoseWind [281]

Answer:

rate boat = 15 mph

rate current = 5 mph

explanation:

d = r * t

t = d/r

240 / (r_boat + current) = 12       Multiply both sides by r_boat + r_current.

240 = 12(r_boat + current)

240/ (r_boat - current) = 24       Multiply both sides by r_boat - r_current

240 = 24*(r_boat - current)    

Since the distances are the same in both equations, you can equate the right side of each.

12 (r_boat + current) = 24(r_boat - current)     Divide by 12

r_boat + current  = 2 (r_boat - current)             Remove the brackets.

r_boat  + current = 2*r_boat - 2* current          add 2 currents to both sides

r_boat  + 3currents = 2*r_boat                          Subtract r_boat both sides

3 currents = r_boat.

240 = 12*(r_boat + current.                               Divide by 12

20 = r_boat + current                                        Put 3 currents in for r_boat

20 = 3currents + 1 current                                Combine

20 = 4 currents                                                  Divide by 4

5 = current

The rate of the current = 5 miles / hour

3 currents = r_boat

3*5 = rate_boat

15 = rate of the boat

8 0
2 years ago
Find the surface area of the rectangular and triangular prisms
harina [27]
Is there a picture to this????

if your just asking how to find  the area of something all you need to do is multiply all the numbers together and the total is the area.
For example if its 8cm,3cm,2cm all you need to do is multiply them together
8x3x2=48  so your area is 48cm
7 0
3 years ago
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