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3 years ago

5

5. What are the forms in which carbon is found in the oceans?

1 answer:

masha68 [24]3 years ago

7 0

Answer: There are two main types of inorganic carbon that are found in the oceans.<u> Dissolved inorganic carbon</u> (DIC) is made up of bicarbonate (HCO3−), carbonate (CO32−) and <u>carbon dioxide</u> (including both dissolved CO2 and carbonic acid H2CO3).

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Which of the following is an extraneous solution of sqrt 4x + 41 = x+5

stiv31 [10]

Answer:

x=-8

Step-by-step explanation:

$\sqrt{4x+41}=x+5$

on squaring both sides

$4x+41=(x+5)^2\\\\4x+41=x^2+10x+25\\\\x^2+6x-16=0\\\\x^2+8x-2x-16=0\\\\x(x+8)-2(x+8)=0\\\\(x-2)(x+8)=0$

either x-2=0 or x+8=0

either x=2 or x=-8

Putting x=2 in original equation, we get

$\sqrt{4\times 2+41}=2+5$

7=7 hence, it is not an extraneous solution

Putting x=-8 in original equation

$\sqrt{4\times (-8)+41}=-8+5$

i.e. 3=-3

Hence, x=-8 is an extraneous solution (since it doesn't satisfy the original equation)

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3 years ago

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The polynomial expression (ax²+2)(x²-3x+1) - (12x⁴-36x³)

satela [25.4K]

I would recommend MathPapa for this.

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3 years ago

Find the center and radius of x^2+y^2+2x-10y+10=0

kumpel [21]

$r^{2} = 16
r=4
(xh)^{2}2+(y-k)2=(x+1)2 +(y-5)2
h=-1,k=5$

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3 years ago

The sum of 2 times a number and 8 is 7

My name is Ann [436]

Answer:

The number is -1/2

Step-by-step explanation:

Let x be the number

2x+8 = 7

Subtract 8 from each side

2x+8-8 = 7-8

2x = -1

Divide each side by 2

2x/2 =-1/2

x = -1/2

The number is -1/2

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3 years ago

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What is -17 mod 8 I’m confused at the moment

alukav5142 [94]

Answer:

-136

Step-by-step explanation:

Given :

-17(|8|)

Mod of positive number is positive

So, |8|=8

-17(8)

=-136

Therefore,-17 mod 8 is -136

4 0

3 years ago