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3 years ago

8) plsss helpp meeee!!

Mathematics

1 answer:

konstantin123 [22]3 years ago

6 0

Answer:

$\sqrt[n]{x^a}=x^{a/n}$

Step-by-step explanation:

While the "law"

$\sqrt[n]{x^n}=x$

may seem more applicable, and may seem to be a special case of the law shown in the answer above, it is not true in general. For example, ...

$\sqrt{x^2}=|x|\ne x \quad\text{for x $$

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Does anyone know how to solve this?

erik [133]

Answer:

A point in polar coordinates is written as (R, θ)

If we want to transform this point to rectangular coordinates, we get:

x = R*cos(θ)

y = R*sin(θ)

Now we can remember that the sine and cosine functions have a period of 2*pi, then:

cos(θ) = cos(θ + 2*pi)

or:

cos(θ) = cos(θ + 2*pi + 2*pi)

and so on.

Then the point (R, θ) is the same as (R, θ + 2*pi) and (R, θ + k*(2*pi))

where k can be any integer number.

Then if we have a point in polar coordinates:

(-4, -5*π/3)

Then another two polar representations of this point are:

(-4, -5*π/3 + 2*π) = (-4, -5*π/3 + 6*π/3) = (-4, π/3)

Now we can not add 2*π (nor subtract) because we would have an angle outside the range [-2*π, 2*π]

For example, if we have:

(-4, π/3 + 2*π) = (-4, 7*π/3)

And we can not change the value of the radius and get the coordinates for the same point.

So another representation could be something like:

(-8/2, π/3)

Where i just wrote -4 in another way.

Now, a really important point.

When working with polar coordinates, we always use R as a positive number (here you can see that R is negative) so this is not the standard notation for the polar representation of a point.

8 0

3 years ago

It's in the picture plzz help

zaharov [31]

ANSWER:

Total monthly budget in dollar = $3665.

Now,

[i] Percent of taxes,

755/3665 × 100 = 20%

[ii] Percent of housing,

790/3665 × 100 = 22%

[iii] Percent of food,

350/3665 × 100 = 9%

[iv] Percent of savings,

700/3665 × 100 = 20%

[v] Percent of transportation,

245/3665 × 100 = 7%

[vi] Percent of clothing,

110/3665 × 100 = 3%

[vii] Percent of utilities,

185/3665 × 100 = 5%

[viii] Percent of entertainment,

110/3665 × 100 = 3%

[ix] Percent of other spending,

420/3665 × 100 = 11%

7 0

2 years ago

How do you do a two step equation with a fraction

shutvik [7]

The fraction symbolizes division. Divide, buddy.

7 0

3 years ago

Read 2 more answers

SOMEONE PLEASE HELP ME!!! I REALLY NEED SOME HELP!!!

Lostsunrise [7]

Answer:

A. (1, -2)

Step-by-step explanation:

We can substitute the variables of x and y into the inequality of $y < -|x|$ .

Let's start with A, -2 being y and 1 being x.

$-2 < - |1|$

The absolute value of 1 is 1, and negating that gets us -1.

$-2 < -1$

Indeed, -2 is less than -1! So A is a solution to the inequality.

Let's test the rest of them, just in case.

For B:

$-1 < -|1|$

Absolute value of 1 is 1, negating it is -1.

$-1$

-1 is EQUAL to -1, not less than it, so is not a solution to the inequality.

Let's try C.

$0 < -|1|$

Absolute value of 1 is 1, negating it is -1.

$0 < -1$

0 is GREATER than -1, so that is not a solution to the inequality.

Hope this helped!

4 0

2 years ago

Which of the following is a polynomial with roots 4, 6, and −7?

aleksklad [387]

Try plugging in 4,6, and -7 into the x's

8 0

2 years ago

Read 2 more answers