2 years ago

Where is the error in solving this equation?

Mathematics

1 answer:

yaroslaw [1]2 years ago

8 0

X should equal negative 2

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2 years ago

Read 2 more answers

How do we solve this?<br> (No need to find x)

Genrish500 [490]

Answer:

Hi,

Step-by-step explanation:

We can't solve that but reduce it to the same denominator.

$\dfrac{x+5}{x}+\dfrac{x+8}{x-1}\\\\=\dfrac{(x+5)(x-1)+x(x+8)}{x(x-1)}\\\\=\dfrac{x^2+5x-x-5+x^2+8x}{x(x-1)}\\\\=\dfrac{2x^2+12x-5}{x(x-1)}\\$

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1 year ago

What is the magnitude of an earthquake with a seismic energy<br> of 1.8 x 10

romanna [79]

Answer:

Do u mean a 10.0 earth quake?

Step-by-step explanation:

7 0

2 years ago

X^2+18=0 solve please

diamong [38]

9514 1404 393

Answer:

x = ±3√2i

Step-by-step explanation:

Add -18 to both sides of the equation:

x^2 = -18

Take the square root of both sides:

x = ±√(-18)

Remember that 18=9·2 = (3^2)·2 and √-1 = i. Simplify.

x = ±(√(3^2))·(√2)·(√-1)

x = ±3√2i

3 0

2 years ago

Someone tell me working out please?

kozerog [31]

So you need to know that
1. 360 degrees=1 full rotation
2. internal angle of a pentagon
3. internal angle of a square

so we know that
internal pentagon angle+internal pentagon angle+internal angle of square+x=360

internal angle of pentagon=54
internal angle of square=90
so now we have
54+54+90+x=360
198+x=360
subtract 198 from boths ides
x=162
answer is x=162 degrees

3 0

2 years ago