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3 years ago

What is 1/5 expressed as a percent? A. 10% B. 20% C. 30% D. 50%

Mathematics

2 answers:

Serggg [28]3 years ago

8 0

Answer:

I'm pretty sure it's B.20%

Dmitrij [34]3 years ago

5 0

Answer:

1/5 is same as 1 devided by 5

1 decided by 5 = 0.2

move decimal point to the right by 2

20 %

Answer is B

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a mine worker discovers an ore sample containing 500mg of radioactive material. it is discovered that the radioactive material h

scoundrel [369]

Answer:

The miner would have 3 1/2 of radioactive material in the sample at the beginning of the 7th day.

Step-by-step explanation:

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3 years ago

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PLSSS HELPPPP IS DUE TODAYYYYYYYYYYY T-T !!

monitta

Wouldnt it be 117% ???

5 0

3 years ago

Can you find the limits of this

Pavel [41]

Answer:

$\displaystyle \lim_{x \to -2} \frac{x^3 + 8}{x^4 - 16} = \frac{-3}{8}$

General Formulas and Concepts:

Calculus

Limits

Limit Rule [Constant]: $\displaystyle \lim_{x \to c} b = b$

Limit Rule [Variable Direct Substitution]: $\displaystyle \lim_{x \to c} x = c$

Limit Property [Addition/Subtraction]: $\displaystyle \lim_{x \to c} [f(x) \pm g(x)] = \lim_{x \to c} f(x) \pm \lim_{x \to c} g(x)$

L'Hopital's Rule

Differentiation

Derivatives
Derivative Notation

Derivative Property [Addition/Subtraction]: $\displaystyle \frac{d}{dx}[f(x) + g(x)] = \frac{d}{dx}[f(x)] + \frac{d}{dx}[g(x)]$

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Step-by-step explanation:

We are given the following limit:

$\displaystyle \lim_{x \to -2} \frac{x^3 + 8}{x^4 - 16}$

Let's substitute in x = -2 using the limit rule:

$\displaystyle \lim_{x \to -2} \frac{x^3 + 8}{x^4 - 16} = \frac{(-2)^3 + 8}{(-2)^4 - 16}$

Evaluating this, we arrive at an indeterminate form:

$\displaystyle \lim_{x \to -2} \frac{x^3 + 8}{x^4 - 16} = \frac{0}{0}$

Since we have an indeterminate form, let's use L'Hopital's Rule. Differentiate both the numerator and denominator respectively:

$\displaystyle \lim_{x \to -2} \frac{x^3 + 8}{x^4 - 16} = \lim_{x \to -2} \frac{3x^2}{4x^3}$

Substitute in x = -2 using the limit rule:

$\displaystyle \lim_{x \to -2} \frac{3x^2}{4x^3} = \frac{3(-2)^2}{4(-2)^3}$

Evaluating this, we get:

$\displaystyle \lim_{x \to -2} \frac{3x^2}{4x^3} = \frac{-3}{8}$

And we have our answer.

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Limits

6 0

3 years ago

Allie wants to subtract 341-97 mentally. first she adds 3 to 97 to get 100. what should Allie's next step be? what is the differ

Rudiy27

Answer:

244.

Step-by-step explanation:

We have been given that Allie wants to subtract 341-97 mentally. First she adds 3 to 97 to get 100. We are asked to determine Allie's next step and the difference of both numbers.

Allie's next step would be add 3 to 341 because adding same quantity to both numbers will keep the ratio same.

After adding 3 to 341 Allie would get $3+341=344$ .

Now, we will subtract 100 from 344 as:

$344-100=244$

Therefore, the difference of both numbers would be 244.

8 0

3 years ago

Plz help and answer

KIM [24]

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3 years ago

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