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Harrizon [31]
2 years ago
8

If y varies jointly with x and z, what is the constant of proportionality when y=30, x=4, and z=5?

Mathematics
1 answer:
Virty [35]2 years ago
8 0

So, if y varies jointly with x and z, that implies a direct proportionality.

The equation will look something like this:

y = xzk

"k" is the constant of proportionality.

Now, when y = 30, x =4, and z = 5:

30 = (4)(5)k

Multiplied:

30 = 20k

divided 30 by 20:

3/2 = k

So your final answer is:

The constant of proportionality in the equation y = xzk when y = 30, x = 4, and z = 5, is 3/2 or 1.5.

Hope that helps!

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Correct me if I'm wrong.
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Determine whether the given function is a polynomial function. If it's a polynomial function, state the degree. If not, state th
Rudik [331]

ANSWER


The correct answer is option D.


EXPLANATION


The given function is



k(x)=-3x^6-0.7x+x^3



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5 0
2 years ago
Need help on this one! Will give Brainliest to the correct answer and thanks
frozen [14]

The answer is C. !!!

8 0
2 years ago
Read 2 more answers
-5x-4y=10
strojnjashka [21]

Answer:

y intercept = (0, ~-\frac{5}{2} )

x intercept = (-2, ~0)

.

Step-by-step explanation:

-5x - 5y = 10

.

y intercept

\to x = 0

-5(0) - 4y = 10

-4y = 10

y = \frac{10}{-4}

y = -\frac{5}{2}

so, the answer is (0, ~-\frac{5}{2} )

.

x intercept

\to y = 0

-5x - 4(0) = 10

-5x = 10

x = \frac{10}{-5}

x = -2

so, the answer is (-2, ~0)

.

Happy to help :)

8 0
2 years ago
Read 2 more answers
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