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romanna [79]
3 years ago
15

If a^3+216 = (a+6)(a^2+ka+36), what does k equal?

Mathematics
1 answer:
zhenek [66]3 years ago
3 0

Answer:

k = -6

Step-by-step explanation:

1. Switch sides

2. Divide both sides by a + 6

3. Subtract a2 both sides

4. Simplify

5. Subtract 36 from both sides

6. Simplify

7. Divide both sides by a

8. Simplify

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Two less than the product of 8 and a number is 8
Eva8 [605]

Answer:

x=1.25

Step-by-step explanation:

Let us replace the number with the variable "x". You will then get this equation:

8x-2=8

Move the -2 to 8 and you would get the equation:

8x=8+2

Simplify:

8x=10

Simplify:

x=10/8

You would then get the answer "x=1.25"

I hope this helps :)

3 0
3 years ago
The equation and graph of a polynomial are shown below. The graph reachesits minimum when the value ofx is 4. What is the y valu
olga_2 [115]
The y-value of this minimum is 4 .
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An artist can sell 20 copies of a painting at $100 each, but for each additional copy he makes, the value of each painting will
dimulka [17.4K]

Answer:

40 more paintings in order to maximize sales making a total of 60 paintings

Step-by-step explanation:

Let x= no.of copies above 20

Total Sales(x) = (number of copies)(price per copy)

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=1200+80x-x^2

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80-2x=0

80=2x

Divide both sides by 2

40=x

Because Sales(x)= –2, this is maximal by the second derivative test

The artist should make 40 more paintings in order to maximize sales making a total of 60 paintings.

4 0
4 years ago
-9+5y= -4x<br> -11x= -20+9y
Jlenok [28]

Answer:

-9+5y=-4x

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+ -11x

_____

-15x

Step-by-step explanation:

i dont really know what i did i kinda just guessed because im not that smart

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3 years ago
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Answer:

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Step-by-step explanation:

5 0
3 years ago
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