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3 years ago

For what value of x is the rational expression below equal to zero?

Mathematics

1 answer:

PolarNik [594]3 years ago

3 0

The answer would be D

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Can someone please help

Fynjy0 [20]

Answer:

angle C = 78

angle D = 108

Step-by-step explanation:

the measure of angle A is 102

To find the measure of angle C

let Angle C be x

102 + x = 180 (linear pair)

x = 180 -102

x = 78

angle C = 78

angle B = 78 (vertically opposite angles are equal)

angle D = 108 (vertically opposite angles are equal)

8 0

3 years ago

PLEASE HELP ASAP

maria [59]

Answer:

First option: $3x^2-5x=-8$

Second option: $2x^2=6x-5$

Fourth option: $-x^2-10x=34$

Step-by-step explanation:

Rewrite each equation in the form $ax^2+bx+c=0$ and then use the Discriminant formula for each equation. This is:

$D=b^2-4ac$

1) For $3x^2-5x=-8$ :

$3x^2-5x+8=0$

Then:

$D=(-5)^2-4(3)(8)=-71$

Since $D$ this equation has no real solutions, but has two complex solutions.

2) For $2x^2=6x-5$ :

$2x^2-6x+5=0$

Then:

$D=(-6)^2-4(2)(5)=-4$

Since $D$ this equation has no real solutions, but has two complex solutions.

3) For $12x=9x^2+4$ :

$9x^2-12x+4=0$

Then:

$D=(-12)^2-4(9)(4)=0$

Since $D=0$ this equation has one real solution.

4) For $-x^2-10x=34$ :

$-x^2-10x-34=0$

Then:

$D=(-10)^2-4(-1)(-34)=-36$

Since $D$ , this equation has no real solutions, but has two complex solutions.

3 0

3 years ago

How to do a equation with 60 less than j. Would label it as 60--j or j--60 ??

slavikrds [6]

J -60
-----------------------------------

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3 years ago

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Model the expression as groups of x + 2. There are x tiles. There are + 1 tiles. The equivalent expression is .

frez [133]

Answer:

x + 2 = 3

Step-by-step explanation:

x is always = to 1

6 0

3 years ago

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Mr. Bridges paid $582.40 for a set of four tires for a truck about how much was the cost per tire

skelet666 [1.2K]

$582.40 / 4 tires = $145.60

Answer: $145.60/tile

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3 years ago