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NISA [10]
3 years ago
7

How do i substitute y=x to 3x+2y=20

Mathematics
2 answers:
never [62]3 years ago
6 0
Where ever u see a y change it to an x
3x+2(x)=20
5x=20
x=4
GrogVix [38]3 years ago
5 0
Hello there,

<span>How do i substitute y=x to 3x+2y=20

Answer : since both are equal , you can change the letters to the same one.
3x + 2x = 20
5x = 20 
x = 5
Therefore y = 5 

Hope This Helps You!
Good Luck Studying :)</span>
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Please help! what is the polar equation r = -5 theta in parametric form?<br><br> thank you!
Rudiy27

Use these equations when converting polar equations to parametric equations:

x=r\cos\theta

y=r\sin\theta

We know that r=5\theta, so substitute that into both equations for x and y.

x=5\theta\cos\theta

y=5\theta\sin\theta

Now, replace \theta with any variable that you want to represent the parametric equations in. I'll use the standard variable, t

x=5t\cos t

y=5t\sin t

Thus, r=5\theta represented in parametric form is:

(x,y)=(5t\cos t, 5t \sin t)

Let me know if you need any clarifications, thanks!

~ Padoru

4 0
3 years ago
Translate each sentence into an equation. Then find each number.
valentina_108 [34]

Answer:

Its c

Step-by-step explanation:

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6 0
3 years ago
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3 0
2 years ago
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Devon rented a U Haul truck for $48 for 4 hours plus $13.50 per each hour you go over. At the end of the day, his total bill was
Rasek [7]

Answer:

You need to write an equation to find the answer to this:

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48 + 13.5h = 112.50               -First you need to subtract 48 from both sides

48 - 48 + 13.5h = 112.50 - 48

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13.5h / 13.5 = 64.5 / 13.5

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However, I would just round to 5.

I hope this helps!

-Mikayla



3 0
3 years ago
How would i estimate the quotient?
Viefleur [7K]
To estimate the quotient, we first round off the divisor and the dividend to the nearest tens, hundreds, or thousands and then divide the rounded numbers. In a division sum, when the divisor is made up of 2 digits or more than 2 digits, it helps if we first estimate the quotient and then try to find the actual number.
8 0
2 years ago
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