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Papessa [141]
3 years ago
15

Solve the equation 3x-1/2y=2

Mathematics
1 answer:
poizon [28]3 years ago
4 0

Answer:

Step-by-step explanation:

Without a second equation relating x and y, we can solve 3x - 1/2y = 2 ONLY for x in terms of y or for y in terms of x:

x in terms of y:    Multiply all three terms of 3x - 1/2y = 2 by 2, to eliminate the fraction:  6x - y = 4.  Now add y to both sides to isolate 6x:  6x = 4 + y.

Last, divide both sides by 6 to isolate x:

x = (4 + y)/6

y in terms of x:    

y = 6x - 4

If you want a numerical solution, please provide another equation in x and y and solve the resulting system.

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Use substitution to solve the system.<br> 5x – 4y = 32<br> y = 2x – 11
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Using the equation y=x , what would be the value of y if the value of x is 2
FrozenT [24]

Answer:

y = 2

Step-by-step explanation:

y = x

x = 2

Plug in the given value.

y = (2)

This is already simplified.

Therefore, when x = 2, y = 2.

Hope this helps!

4 0
3 years ago
A salad dressing calls for 3 parts oil and
Nady [450]

Answer:

The quantities used by Manuela were correct

Step-by-step explanation:

The question is

Did Manuela use the right quantities?

Let

x -----> the parts of oil

y ----> the parts of vinegar

we know that

The ratio of the parts of oil by the parts of vinegar of recipe is

\frac{x}{y} =\frac{3}{1}\frac{oil}{vinegar}

Determine the relation used by Manuela

\frac{x}{y} =\frac{6}{2}

Compare with the recipe

\frac{3}{1} =\frac{6}{2}

3(2)=6(1)\\6=6

Is true, the quantities are proportional

therefore

The quantities used by Manuela were correct

3 0
4 years ago
In ΔWXY, the measure of ∠Y=90°, YX = 40, XW = 41, and WY = 9. What ratio represents the cosine of ∠W?
andreyandreev [35.5K]

Answer:

\cos(W) = \frac{9}{41}

Step-by-step explanation:

Given

\angle Y = 90^o

YX = 40; XW = 41; WY = 9

Required

Determine \cos(W)

The question is illustrated with the attached image.

So:

\cos(W) = \frac{Adajacent}{Hypotenuse}

\cos(W) = \frac{WY}{XW}

This gives:

\cos(W) = \frac{9}{41}

3 0
3 years ago
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