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Vesna [10]
3 years ago
10

For each ordered pair, determine whether it is a solution to the system of equations.

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
3 0

Answer:

(-6, 2) NO

(3, 5) NO

(-3, - 4) YES

(2, 9) NO

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I don’t know this sorry
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The volume V of a gas varies inversely as the pressure P and directly as the temperature A certain gas has a volume of 10 liters
Ad libitum [116K]

Answer:

Joint variation states that:

If z is directly proportional to x and inversely proportional to y,

i.e, z \propto x , z \propto \frac{1}{y}

then the equation is in the form: z = k\frac{x}{y} where k is the constant of variation.

From the given information: The volume V of a gas varies inversely as the pressure P and directly as the temperature

i.,e V \propto T , V \propto \frac{1}{P}

by definition of joint variation:

V = k\frac{T}{P}  .....[1] where k is the constant of variation.

It is also given that a certain gas has a volume of 10 liters(L) , a temperature of 300 kelvins(K), and a pressure of 1.5 atmosphere(atm).

Substitute these given values in [1] to solve for k;

10 = k\frac{300}{1.5}

Simplify:

10 = 200k

Divide by 200 both sides we have;

k = \frac{10}{200} =\frac{1}{20}

Now, if a gas has a temperature of 400 kelvins and a pressure of 5 atm.

To find the volume (V);

Now substitute the given data and value of k in [1] we have;

V = \frac{1}{20} \cdot \frac{400}{5} = \frac{20}{5} = 4

Therefore, the Volume of a gas is, 4 liters


5 0
3 years ago
Find the slope of the line passing through the points (9,7) and (9, -2)
Semmy [17]
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i did the same thing
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3 years ago
Answer question #4:)
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Step-by-step explanation:

but that is the easiest of all 4 questions (by far) :

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which is exactly f(x) = 24x² + 9

so, yes, they are equal.

I really have to wonder, since you correctly solved 1-3, what was the issue with 4. ?

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3 years ago
Work out 7/9 - 3/7<br>what's the answer in its simplest form​
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Answer:

22/63 thats ur answer simplifed

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3 years ago
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