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3 years ago

Paul needs to find 310% of 72. Which expression should he use?

Mathematics

2 answers:

hichkok12 [17]3 years ago

7 0

Answer:

Step-by-step explanation:

To find a certain percentage of a number, we need to get the decimal equivalent of the percentage and then multiply this with the number.

For our problem given, we need to multiply 72 with the decimal equivalent of 310%.

How do we convert percentage to decimal?

We divide by 100. So we have:

310% = 310/100 = 3.1

Now, we multiply:

3.1 * 72

dedylja [7]3 years ago

5 0

Answer:

He should use (310) (72)

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Answer:

First option is the correct option.

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$\frac{2x + 5}{ {x}^{2} - 3x } - \frac{3x + 5}{ {x}^{3} - 9x } - \frac{x + 1}{ {x}^{2} - 9 }$

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$\frac{2x + 5}{x(x - 3)} - \frac{3x + 5}{x( {x}^{2} - 9)} - \frac{x + 1}{ {x}^{2} - 9}$

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$\frac{2x + 5}{x(x - 3)} - \frac{3x + 5}{x(x - 3)(x + 3) } - \frac{x + 1}{(x - 3)(x + 3)}$

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Multiply the parentheses

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When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression

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Distribute -x through the parentheses

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Collect like terms

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Write 7x as a sum

$\frac{ {x}^{2} + 5x +2x + 10 }{ {x}^{3} - 9x }$

Factor out X from the expression

$\frac{x(x + 5) + 2x + 10}{ {x}^{3} - 9x}$

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2 years ago

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“ write all your answers with a positive exponent so your answer will be in the form of x^# or 1/(x^#)

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Answer:

Step-by-step explanation:

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= x²

7). $x^{-6}=\frac{1}{x^6}$

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9). $x^{-8}=\frac{1}{x^8}$

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2 years ago

Suppose a normal distribution has a mean of 38 and a standard deviation of 2. What is the probability that a data value is betwe

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Answer:

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Step-by-step explanation:

We know mean u = 38 standard dev. s = 2

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Step-by-step explanation:

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2 years ago

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