17. A toxin increases from 12 ppm to 48 ppm. What percent increase is this?

Advanced Placement (AP)

1 answer:

OLga [1]3 years ago

5 0

Answer:

In order to express the results as a percent, divide the nutrient content (which is expressed in ppm) by 10,000. For example, if the reported value for P2O5 is 2,690 ppm, the calculation to convert to percent would be: 2,690 ppm ÷ 10,000 = 0.269%.

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What is: 5g + 3( -4 + 4g) = 1 - g

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Answer:

Let’s start by using:

Parenthesis
Exponent(s)
Multiplication
Division
Addition
Subtraction

Parenthesis always come first, and since we do have parenthesis in this equation, we need do what’s inside the parenthesis first!

First, write out the entire equation.
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Next, follow the PEMDAS rule(s) and you should eventually get the full, correct answer.

Now, do keep in mind that in order to do what’s in the parenthesis you may have to multiply, *cough, cough*, divide, add, etc. first!

Hope I helped, and the best of luck!

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