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3 years ago

13

If y varies directly with x according to the relationship y = kx, and y = 7.5 when x = 2.5, determine the constant of variation

k.

1 answer:

victus00 [196]3 years ago

8 0

Answer:5

Step-by-step explanation:

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What is intercept x and y for 2x + 3y = 12

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y-intercept: (0,4)

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3 years ago

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The number that chose butterscotch is equal to the total number times the percentage that chose butter scotch:
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3 years ago

If a real estate agent receives 17 percent of the selling price of each house he sells, then what would the agent make if the ho

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Answer:

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Step-by-step explanation:

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3 years ago

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Find all the zeroes of the equation(with simple steps).

uysha [10]

<u>Answer-</u>

<em>The zeros are, $5,\ -5,\ 4i,\ -4i$ </em>

<u>Solution-</u>

$\Rightarrow -3x^4+27x^2+1200=0$

$\Rightarrow -3(x^2)^2+27(x^2)+1200=0$

Here,

a = -3, b = 27, c = 1200

So,

$x^2=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

$=\dfrac{-27\pm \sqrt{-27^2-4\cdot (-3)\cdot 1200}}{2\cdot (-3)}$

$=\dfrac{-27\pm \sqrt{729+14400}}{-6}$

$=\dfrac{-27\pm 123}{-6}$

$=\dfrac{-27+123}{-6},\ \dfrac{-27- 123}{-6}$

$=\dfrac{96}{-6},\ \dfrac{-150}{-6}$

$=-16,\ 25$

So,

$\Rightarrow x^2=25,\ -16$

$\Rightarrow x=\sqrt{25},\ \sqrt{-16}$

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3 years ago

What do you need to do for this 2 step

Andrew [12]

−27
16
is the answer ...

−9
4
(3)
4
=
−27
4
4
=
−27
16

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3 years ago

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