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2 years ago

What must be added to a^2+3/5a

1 answer:

3 0

This question doesn’t really make sense- is it multiple choice, if so what are the options? A can be anything as long as it’s the same?

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What types of numbers are undefined when they are under a radical sign? If you were dealing with the number √-1, would it be def

Misha Larkins [42]

The square root of a a negative integer is imaginary.
It would still be a negative under a square root if you multiplied it by 2, therefor it will still be imaginary, or I’m assuming as your book calls it, undefined.
2•(sqrt-1) = 2sqrt-1

If you add a number to -1 itself, specifically 1 or greater it will become a positive number or 0 assuming you just add 1. In that case it would be defined.
-1 + 1 = 0
-1 + 2 = 1

If you add a number to the entire thing “sqrt-1” it will not be defined.
(sqrt-1) + 1 = 1+ (sqrt-1)

If you subtract a number it will still have a negative under a square root, meaning it would be undefined.
(sqrt-1) + 1 = 1 + (sqrt-1)

however if you subtract a negative number from -1 itself, you end up getting a positive number or zero. (Subtracting a negative number is adding because the negative signs cancel out).
-1 - -1 = 0
-1 - -2 = 1

If you squared it you would get -1, which is defined
sqrt-1 • sqrt-1 = -1

and if you cubed it, you would get a negative under a square root again, therefor it would be undefined.
sqrt-1 • sqrt-1 • sqrt-1 = -1 • sqrt-1 = -1(sqrt-1)

Sorry if this answer is confusing, I don’t have a scientific keyboard, I’ll get one soon.

8 0

3 years ago

Y'=<img src="https://tex.z-dn.net/?f=%5Cfrac%7B-2x%2B2y%2B1%7D%7Bx-y%2B1%7D" id="TexFormula1" title="\frac{-2x+2y+1}{x-y+1}" alt

AlladinOne [14]

Answer:

see below

Step-by-step explanation:

dx 2+2xy 1 1 2 2

____ = ______ – ___x^2 – ____y^2 – _____x + ______y

dy 3 3 3 3 3

8 0

2 years ago

Help please i’m not really sure what the answer is

Maslowich

Answer:

The area is 48

The perimeter is 32

4 0

3 years ago

Caleb is participating in a walk-a-thon. His goal is to walk as far as possible over an 8-hour period.

luda_lava [24]

Caleb is participating in a walk-a-thon. His goal is to walk as far as possible over an 8-hour period.

For the first 3 hours, he keeps a steady pace of 2 miles per hour.

He then stops walking while he takes a 1-hour break for lunch.

It's too short. Write at least 20 characters to explain it well.

6 0

2 years ago

SELECT ALL THAT APPLY. In a population of 250 students, 60% are Whites, 20% are Latinos, 15% are Blacks, and 5% others. In a pro

Sophie [7]

In a proportionate stratified sample of 120, there are 72 Whites, 24 Latinos, 18 Blacks and 6 others.

Proportionate Stratified Sample

A proportionate stratified sample is one in which the size of the strata in the sample is proportional to the size of the strata in the population; in other words, the chance of selecting a unit from a stratum depends on the relative size of that stratum in the population.

Calculating the Proportionate Stratified Sample

The given percentage of -

Whites = 60%

Latinos = 20%

Blacks = 5%

Strength of the sample = 120

⇒ Number of Whites = 60% of 120

= 0.6 × 120

=72

Number of Latinos = 20% of 120

= 0.2 × 120

=24

Proportionate Stratified Sample of Blacks and Others

Count of Blacks = 15 % of 120

= 0.15 × 120

= 18

Count of others = 5% of 120

= 0.05 × 120

Thus, in a Proportionate Stratified Sample of 120, 72 are Whites, 24 are Latinos, 18 are Blacks, and 6 are others.

Learn more about Proportionate Stratified Sample here:

brainly.com/question/20692763

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6 0

2 years ago

What must be added to a^2+3/5a​

What must be added to a^2+3/5a