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lions [1.4K]
4 years ago
9

Y is directly proportional to x^2. It is known that y=10 for a particular value of x. Find the value of y when the value of x is

halved
...?
Mathematics
1 answer:
Mandarinka [93]4 years ago
3 0
<span>Y is directly proportional to x^2. It could be represented by the expression:

y </span>α x^2

We can make it into an equality by inserting the proportionality constant, k.

y = kx^2

k would be constant for any value of y with a corresponding value of x. We solve the problem by this concept as follows:

y1/(x1)^2 = y2/(x2)^2
10/(x1)^2 = y2/(x1/2)^2
10/4 = y2

Therefore, when the value of x is halved, y is equal to 10/4.
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So, V = 7(9)(11.2) = 705.6 cm^3
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Which of the accounts below are considered accrued expenses?
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A website posts evaluations on airlines. It posts the most positive and the most negative comments for each airline. Discuss the
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Step-by-step explanation:

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What value of x is in the solution set of 4x – 12 5 16 + 8x?
TEA [102]

Answer:

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And we can subtract 4x in both sides and we got:

-12 = 16 +4x

Now we can subtract in both sides 16 and we got:

-28 = 4x

And if we divide both sides by 4 we got:

x = -7

And the best solution would be:

-7

Step-by-step explanation:

For this case we assume the following equation:

4x-12= 16 +8x

And we can subtract 4x in both sides and we got:

-12 = 16 +4x

Now we can subtract in both sides 16 and we got:

-28 = 4x

And if we divide both sides by 4 we got:

x = -7

And the best solution would be:

-7

8 0
3 years ago
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