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3 years ago

.32 .037 3.8 .315 What are these as percents

Mathematics

1 answer:

Whitepunk [10]3 years ago

7 0

Answer:

32%

3.7%

380%

31.5%

Step-by-step explanation:

move the decimal two places to the right (add or take away the zero)

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245 is a natural numbers, whole numbers, integers, rational numbers, irrational numbers, or real numbers?

koban [17]

Answer: Everything but "irrational number"

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Explanation:

The number 245 is a natural number since the set of natural numbers is {1, 2, 3, 4, 5, 6, ...} basically the set of counting numbers. More technically, the set of natural numbers is the set of positive whole numbers.

The number 245 is also an integer. It does not have any decimal or fractional parts. The set of integers includes negative whole numbers as well.

The number 245 is a whole number for similar reasoning as it being an integer.

The number 245 is a rational number. Why? Because we can write 245 as 245/1. In other words, 245 = 245/1. Because we can form a fraction of two integers, this shows us 245 is rational. Note: 0 cannot be in the denominator.

The number 245 is NOT an irrational. If a number is rational, then it cannot be irrational. The very definition of "irrational" means "not rational". An example of an irrational number is sqrt(2). We cannot write this as a fraction of two integers.

The number 245 is a real number. If you haven't learned about complex numbers yet, then every number you encounter is a real number.

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To summarize, 245 is a natural number, a whole number, an integer, a rational number, and a real number.

A much shorter way to say this is "everything but irrational" since irrational is the only non-answer.

7 0

3 years ago

Choose the correct sum of the polynomials (6x3 − 8x − 5) (3x3 6x 2). 9x3 − 2x − 3 3x3 2x 3 3x3 − 2x − 3 9x3 14x 3.

RUDIKE [14]

Like terms have the same variable and power. The sum of the two polynomials $(6x^3 -8x -5)+(3x^3+6x+2)$ is $3x^3 -2x -3$ .

<h3>What are Like terms?</h3>

Like terms are those terms that are having the same variables, also the variables are of the same order as well.

for example, 25x and 5x are like terms; 30xy and 7xy are like terms, 9x³ and 4x² are not like terms, etc.

We know that in order to find the sum of the two polynomials we need to add or subtract the like terms, therefore, the sum of the polynomials can be done as,

$(6x^3 -8x -5)+(3x^3+6x+2)\\\\= 6x^3 -8x -5+3x^3+6x+2\\\\= 6x^3 +3x^3- 8x+6x-5+2\\\\ = 3x^3 -2x -3$

Hence, the sum of the two polynomials $(6x^3 -8x -5)+(3x^3+6x+2)$ is $3x^3 -2x -3$ .

Learn more about Like Terms:

brainly.com/question/2513478

5 0

3 years ago

Y=x.arctan(x)^1/2. find dy/dx. pls show steps

Whitepunk [10]

$y=x(\arctan x)^{1/2}$

Use the product rule first:

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dx}{\mathrm dx}(\arctan x)^{1/2}+x\dfrac{\mathrm d(\arctan x)^{1/2}}{\mathrm dx}$

$\dfrac{\mathrm dy}{\mathrm dx}=(\arctan x)^{1/2}+x\dfrac{\mathrm d(\arctan x)^{1/2}}{\mathrm dx}$

Use the chain rule to compute the derivative of $(\arctan x)^{1/2}$ . Let $z=(\arctan x)^{1/2}$ and take $u=\arctan x$ , so that by the chain rule

$\dfrac{\mathrm dz}{\mathrm dx}=\dfrac{\mathrm dz}{\mathrm du}\dfrac{\mathrm du}{\mathrm dx}$

$\dfrac{\mathrm dz}{\mathrm du}=\dfrac{\mathrm du^{1/2}}{\mathrm du}=\dfrac12u^{-1/2}$

$\dfrac{\mathrm du}{\mathrm dx}=\dfrac{\mathrm d\arctan x}{\mathrm dx}=\dfrac1{1+x^2}$

$\implies\dfrac{\mathrm d(\arctan x)^{1/2}}{\mathrm dx}=\dfrac1{2(\arctan x)^{1/2}(1+x^2)}$

So we have

$\dfrac{\mathrm dy}{\mathrm dx}=(\arctan x)^{1/2}+\dfrac x{2(\arctan x)^{1/2}(1+x^2)}$

You can rewrite this a bit by factoring $(\arctan x)^{-1/2}$ , just to make it look neater:

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac1{2(\arctan x)^{1/2}}\left(2\arctan x+\dfrac x{1+x^2}\right)$

3 0

3 years ago

The product of two numbers is 66. Their sum is 17. What are the two numbers?

Mars2501 [29]

Answer:

Then the two numbers are -11 and -6.

3 0

2 years ago

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Ann is a construction worker, and she is preparing to have concrete poured at her construction site. Each corner is designed to

lana [24]

Answer:

Last and 3rd

Step-by-step explanation:

They both increase at the vidynal

8 0

3 years ago

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