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topjm [15]
3 years ago
13

Does the equation 2x-4y=0 represent a direct variation

Mathematics
2 answers:
Art [367]3 years ago
7 0
2x-4y=0
y=2x/4
y=(1/2)*x
f(x)=(1/2)x
f'(x)=1/2
Answer: 1/2
garri49 [273]3 years ago
3 0
It has a constant variation of 1/2
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Paul has $30,000 to invest. His intent is to earn 15% interest on his investment. He can invest part of his money at 8% interest
jeka94

Answer:

Amount invested at 8% is $9000 and amount invested at 18% is $21000.

Step-by-step explanation:

Let amount invested at 8% be x.

Let amount invested at 18% be y.

We get the 1st equation as:

x+y=30000       ........(1)

We get the second equation as:

0.08x+0.18(y)=0.15\times30000

=> 0.08x+0.18y=4500

or getting rid of the decimal by multiplying by 100 on both sides.

8x+18y=450000          ........(2)

Multiplying (1) by 8 and subtracting from (2) we get

10y=210000  

So, y = 21000

And x+21000=30000

x = 30000-21000

So, x = 9000

Therefore, amount invested at 8% is $9000 and amount invested at 18% is $21000.

6 0
3 years ago
Slope is used for which of the following situations?
Valentin [98]
Slope (or gradient) is used to determine if lines are parallel, as parallel lines share the same gradient.

The gradient is used to determine whether they intersect, as you'll have to plug x and y values in to both of the line's equations, which involves having the line's gradients.

The gradient is used to see if points are collinear, as you need to determine whether the gradient between two points is equal to the gradient of another 2 points, and if so, the points are collinear.

Finally, the gradient is used to find the equation of the line, as we require to plug in the gradient in to equations such as (y - y1 = m(x - x1)) in order to find the equation of the line.
7 0
3 years ago
Read 2 more answers
Which statement best describes an example of a long-term
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A is a long term-investment strategy
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Bro the answer is obviously dababy
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3 years ago
For each value of w, determine whether it is a solution to -56=7(w-3).
Ivanshal [37]
This should help you out!

8 0
3 years ago
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