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Naya [18.7K]
3 years ago
15

12x-20y=108 3x+ky=27 what is k

Mathematics
1 answer:
Sedaia [141]3 years ago
3 0

Let's look at the second equation and try multiplying it by 4:

4 * (3x + ky) = 4 * 27

Which gives us:

12x + 4ky = 108

This looks almost exactly like the first equation except that instead of -20y, there is 4ky. We could try making them equal to each other and solving for k:

-20y = 4ky

-20 = 4k

k = -5

Then, the answer is k = -5.

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If h= 11 units and r=4 units then what is the approximate volume of the cone
muminat

Answer:

V≈184.31

Step-by-step explanation:

V=πr2h

3=π·42·11

3≈184.30677

8 0
3 years ago
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WILL GIVE BRAINLIEST!!!<br><br> Select the graph of y = 3 sin (x + pi/4)
Romashka-Z-Leto [24]

Answer: it’s b

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6 0
3 years ago
QUICK HELP!!!!
sasho [114]

Answer:

y =  \frac{3}{4} x -  \frac{3}{2}

Step-by-step explanation:

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- 6 \: from \: both \: sides

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divede \: by \: 2 \: on \: both \: sides

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Hope this helps!

7 0
3 years ago
. what is the difference between these 16 degrees farenheit and -15 degrees farenheit
Ivahew [28]

Answer:

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7 0
3 years ago
The answer to this question
oee [108]
If the cell phone company charges a flat $40 fee monthly, then the equation would be y = 40.


The company does charge $40 a month, but also charges $2 per minute out of service area (x).

So the equation is y = 2x + 40

To graph this linear function, plug in values for x then plot the plots. Then draw a line to connect the points.

y = f(x)

f(0) = 40
f(1) = 42
f(2) = 44
f(3) = 46
f(4) = 48
f(5) = 50

So at x=0, draw a point at y=40 and so on.






6 0
3 years ago
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