Which of the following relations is a function?

Mathematics

2 answers:

Anon25 [30]3 years ago

6 0

Answer:

D.(5,1),(-5,4),(2,1),(5,2)

tino4ka555 [31]3 years ago

4 0

It is D.!!!!!!!!!!!!!!!!!

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Plz Help 30 points:

Inessa [10]

Answer:

a = 2(b) + 4.

Step-by-step explanation:

Part A: $11 + a = b. A= the extra money he got for walking the dog. B= the total money for walking the dogs.

Part B: a = 2(b) + 4. I did + 4 because it says “Larry was able to walk 4 more than twice as many dogs as his friend Kyle”. This equation would work because a = Larry and b = Kyle, so Larry has 2 times the amount as Kyle plus the 4.

I hope this helps <3

4 0

3 years ago

Read 2 more answers

What is the reciprocal of 4/15

ziro4ka [17]

<u>Answer:</u>

15/4

<u>Explanation:</u>

To find the reciprocal of a fraction, switch the denominator and the numerator, which will give you the reciprocal of a fraction.

Hoped this helped.

$GeniusUser$

7 0

3 years ago

A fluid has density 810 kg/m3 and flows with velocity v = z i + y2 j + x2 k, where x, y, and z are measured in meters and the co

mixas84 [53]

Denote the cylindrical surface by $S$ , and its interior by $R$ . By the divergence theorem, the integral of $\vec v$ across $S$ (the outward flow of the fluid) is equal to the integral of the divergence of $\vec v$ over the space it contains, $R$ :

$\displaystyle\iint_S\vec v\cdot\mathrm d\vec S=\iiint_R(\nabla\cdot\vec v)\,\mathrm dV$

The given velocity vector has divergence

$\vec v=z\,\vec\imath+y^2\,\vec\jmath+x^2\,\vec k\implies\nabla\cdot\vec v=\dfrac{\partial(z)}{\partial x}+\dfrac{\partial(y^2)}{\partial y}+\dfrac{\partial(x^2)}{\partial z}=2y$