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3 years ago

Is this an example of direct variation? f(x)=2xy

Mathematics

1 answer:

docker41 [41]3 years ago

7 0

Answer:

Yes, it is:

Step-by-step explanation:

Given

$f(x) =2xy$

Required

Determine if it is a direct variation

A direct variation is represented as:

$f(x)\ \alpha\ x$

Express as equation

$f(x) = kx$

Compare $f(x) = kx$ to $f(x) =2xy$

$k = 2y$

Hence, it is a direct variation

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yan [13]

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4 years ago

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{(5²)} ³×5⁴}÷5⁷ simplify and express the following as exponent

Stels [109]

Answer:

The answer is 5³.

Step-by-step explanation:

You have to apply Indices Law :

${a}^{m} \times {a}^{n} ⇒ {a}^{m + n}$

${a}^{m} \div {a}^{n}⇒ {a}^{m - n}$

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$( {( {5}^{2}) }^{3} \times {5}^{4} ) \div {5}^{7}$

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3 years ago

Convert radians to degrees Show all the work 6. 3.8 radians 8. 5π/4(this is a fraction)

e-lub [12.9K]

Answer:

Below in bold.

Step-by-step explanation:

Degrees = radians * 180/π.

6. 3.8 radians = 3.8 * 180 / π

= 217.7 degrees to nearest hundredth.

8. 5π/4 radians = 5π/4 * 180/π

= 5*180/4

= 225 degrees.

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3 years ago

Graph the system of equations on your graph paper to answer the question.

Semenov [28]

Answer:

(-1,4) This is the solution for the given system

Step-by-step explanation:

The first graph is shown in the first picture attached, it has the points (3,0) and (0,3)

The other graph is attached as well

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3 years ago

I need help pleaseee!!!

ZanzabumX [31]

Answer: x = 57

Step-by-step explanation:

Since CD = AC, triangle ACD is isosceles, therefore

ADC = DAC

ADC + DAC + 112 = 180

ADC + DAC = 180 -112 = 68

ADC + DAC = 68/2 = 34

DEB = 180 - 34 - 23 = 123 (sum of interior angles of a triangle = 180)

Therefore, x = 180 - 123 = 57 (DEB and x are supplementary angles)

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1 year ago