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3 years ago

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4j - 24- 6j = 120 what's the solution? solution=

1 answer:

maw [93]3 years ago

4 0

$4j - 24- 6j = 120\\
4j-6j=120+24\\-2j=144\\
j=-72$

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Select the description that is true of the equation 2x+4y=2

Ronch [10]

X-intercept equals 1

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3 years ago

You select a letter randomly from a bag containing the letters s, p, i, n, n, e, and r. find the probability of selecting an s.

Tems11 [23]

Answer:

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Step-by-step explanation:

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2 years ago

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What are the discontinuity and zero of the function f(x) = quantity x squared plus 6 x plus 8 end quantity over quantity x plus

Tcecarenko [31]

Answer:

Discontinuity at (-4,-2), zero at (-2,0).

Step-by-step explanation:

We are given that a function

$f(x)=\frac{x^2+6x+8}{x+4}$

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Discontinuity: It is that point where the function is not defined.

It makes the function infinite.

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$f(x)=\frac{(x+4)(x+2)}{x+4}$

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$f(x)=x+2$

Substitute x=-4

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Therefore, the point of discontinuity is (-4,-2).

Zero: The zero of the function is that number when substitute it in the given function then the function becomes zero.

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3 years ago

In two or three sentences explain how you would solve for the real solutions of the following equation: please help asap!!

g100num [7]

the real solutions for the equation $x^{3}=-64$ are -

$x=4,2+-2\sqrt{3i}$

Step-by-step explanation:

$x^{3}$ = $- 64$

$x^{3} +64$ = 0

We can write 64 as $4^{3}$

$x^{3}$ + $4^{3}$ = 0

using the identity ( $x^{3}+y^{3} = (x+y)(x^{2} -xy+y^{2} )$ )

we get,

= $(x+4) (x^{2} -x*4+4^{2} )$

= $(x+4)(x^{2} -4x+16)$ ....................(1)

solving the quadratic equation ,

$x^{2} -4x+16$ =0

solutions of this quadratic equation can be obtained by

$x=-b +- \sqrt{b^{2}-4ac } /2a$

let use y for factors

$x=-(-4x)+-\sqrt{(-4x^{2} )-4*x^{2} *16} / 2*x^{2}$

$x=4x+-\sqrt{16x^{2} -64x^{2} } /2x^{2}$

$x=4+-\sqrt{16-64}/2$

$x=4+-4\sqrt{3i} /2$

<u /> $x=2+-2\sqrt{3i}$ ..................(2)

from the equation 1 we have,

$x-4=0$

which gives solution $x=4$

and from equation 2 we got $x=2+-2\sqrt{3i}$

so the real solutions for the equation $x^{3}=-64$ are -

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2 years ago

Lady bird [3.3K]

D should be the correct answer

7 0

3 years ago