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1 year ago

If cyanide in a stream next to a gold mine increases from 240 ppm to 360 ppm, what percent increase is this?

Mathematics

1 answer:

avanturin [10]1 year ago

4 0

Given :

Initial concentration , 240 ppm .

Final concentration , 360 ppm .

To Find :

Percent increase.

Solution :

Percentage increase is given by :

$=\dfrac{Final-Initial}{Initial}\times 100\\\\=\dfrac{360-240}{240}\times 100\\\\=50\%$

Therefore , percent increase is 50 % .

Hence , this is the required solution .

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Anna11 [10]

Answer:

0; 10; 20

Step-by-step explanation:

x is the independent variable

y is the dependent variable

y is dependent on x

a) For what value of the independent variable will the value of the function be equal to −6

y=0.3x−6

-6 = 0.3x-6

0=0.3x

x = 0

Therefore, if the independent variable is 0, the value of the function will be -6.

b) For what value of the independent variable will the value of the function be equal to −3

y=0.3x−6

-3 = 0.3x-6

0.3x = -3+6

0.3x = 3

x = 3/0.3

x = 10

Therefore, if the independent variable is 10, the value of the function will be -3.

c) For what value of the independent variable will the value of the function be equal to 0.

y=0.3x−6

0=0.3x-6

6 = 0.3x

x = 6/0.3

x = 20

Therefore, if the independent variable is 20, the value of the function will be 0.

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1 year ago

What is the angle θ that the field e⃗ makes with the surface of the slab, which is perpendicular to the x direction? express you

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The angle θ that the field e⃗ makes with the surface of the slab, which is perpendicular to the x direction is θ = -1.57 rad

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

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pav-90 [236]

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Given that the total cost of a $32 item is $33.60, thus

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Therefore, the total cost on a $55 item is given by

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2 years ago

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just olya [345]

Answer:

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Step-by-step explanation:

Let's translate what you've written in words to an expression with mathematical symbols.

$\frac{\sqrt6 +\sqrt{11}}{\sqrt{5} + \sqrt{3}}$

To solve this, you need to multiply both the numerator and denominator with the conjugate of the denominator.

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Answer:

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Step-by-step explanation:

Take the total number of signatures and multiply by the fraction that were done in pencil to determine the number done in pencil

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