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4 years ago

Select the two expressions that are equivalent to each other

Mathematics

2 answers:

Brut [27]4 years ago

7 0

Answer:

D and E are equivalent to each other.

Step-by-step explanation:

UMMMMM hard to explain (for me its hard) sorry

Scrat [10]4 years ago

4 0

The equivalent expressions are D and E.

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The frequency of a radio wave varies inversely with its wavelength. If a 100-meter wave has a frequency of 3,000 kilohertz, what

Zarrin [17]

$\bf \qquad \qquad \textit{inverse proportional variation}
\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------$

$\bf \textit{frequency varies inversely with its wavelength}\qquad f=\cfrac{k}{w}
\\\\\\
\textit{we also know that }
\begin{cases}
w=100\\
f=3000
\end{cases}\implies 3000=\cfrac{k}{100}
\\\\\\
300000=k\qquad thus\qquad \boxed{f=\cfrac{300000}{w}}
\\\\\\
\textit{now, when f = 500, what is \underline{w}?}\qquad 500=\cfrac{300000}{w}
\\\\\\
w=\cfrac{300000}{500}\implies w=600$

7 0

3 years ago

If one dog eats 5 pounds of food each week, how many dogs will 65 pounds of food feed for a week

Kitty [74]

Answer:

It will feed 13 dogs.

Step-by-step explanation:

1 dog = 5 lbs

Set up an equation:

Variable x = number of dogs

1/5 = x/65

Cross multiply:

1 × 65 = 5 × x

65 = 5x

Divide both sides by 5:

Check your work:

13 dogs × 5 lbs = 65 lbs

65 = 65

Correct!

7 0

3 years ago

Can someone help me on this?

Vinil7 [7]

Answer:

12√2

Step-by-step explanation:

45-45-90 special right triangles follow the form of x,x,x√2

Where both the sides that are across from the same angle (45) are equal in length and the hypotenuse is that value multiplied by the √2

6 0

3 years ago

Read 2 more answers

If you put all the sunflowers together end to end, what would be the total length of all the sunflowers?

Serhud [2]

Answer:

7 1\68

Step-by-step explanation:

all i did was look up a fraction calculator

calculator soup is the one i used :)

4 0

4 years ago

What is the difference of the polynomials? (Ă˘â‚¬""2x3y2 4x2y3 Ă˘â‚¬"" 3xy4) Ă˘â‚¬"" (6x4y Ă˘â‚¬"" 5x2y3 Ă˘â‚¬"" y5) Ă˘â‚¬""6x4y

zlopas [31]

Polynomial-An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable. The difference between the given polynomials is

$=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5$

Given-

We have given two function of variable <em>x </em>and <em>y</em>

$(-2x^3y^2 + 4x^2y^3-3xy^4)$

$(6x^4y-5x^2y^3-y^5)$

<h3>Polynomial</h3>

An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable.

Now we have to subtract the two equations to find the difference,

$(-2x^3y^2 + 4x^2y^3-3xy^4)-(6x^4y-5x^2y^3-y^5)$

Multiply the sign into the bracket to open the bracket and further solution,

$=-2x^3y^2 + 4x^2y^3-3xy^4-6x^4y+5x^2y^3+y^5$

Arrange the similar terms in the same groups,

$=-2x^3y^2 + (4x^2y^3+5x^2y)-3xy^4-6x^4y+y^5$ $=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5$

Hence, the difference between the given polynomials is $=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5$

For more about the polynomials, follow the link below-brainly.com/question/17822016

5 0

3 years ago