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FromTheMoon [43]
3 years ago
10

Which equation represents a proportional relationship that has a constant of proportionality equal to StartFraction 4 over 5 End

Fraction? y = x + StartFraction 4 over 5 EndFraction y = StartFraction 4 over 5 EndFraction x x y = StartFraction 4 over 5 EndFraction x + y = StartFraction 4 over 5 EndFraction
Mathematics
2 answers:
e-lub [12.9K]3 years ago
5 0

Answer:

  y=\dfrac{4}{5}x

Step-by-step explanation:

A proportional relationship is modeled by the equation ...

  y = kx

When the constant of proportionality (k) is 4/5, this equation becomes ...

  y = (4/5)x

Morgarella [4.7K]3 years ago
4 1

Answer:

The answer is A

Step-by-step explanation:

got it right edg

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Mkey [24]

Answer:  \frac{\sqrt{6}}{5y}

Step-by-step explanation:

The given radical expressions are:

A. \frac{11y}{\sqrt{3}}\\\text{It is not completely simplified ,}\\\text{since denominator is radical, we need to rationalize it first to simplify. }\\\\B.\frac{\sqrt{6}}{5y}\\\text{It is completely simplified ,}\\\text{since its denominator is not radical and 6 is not a perfect square. }\\\\C. \frac{\sqrt{17}}{\sqrt{4}}\\\text{It is not completely simplified ,}\\\text{since denominator is radical, we need to rationalize it first to simplify. }\\\\\\\\D. \frac{\sqrt{25}}{18}=\frac{5}{18}\\\text{Hence, expression D was not completely simplified .}

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3 years ago
Rina is making a nut mixture to sell at the local farmers' market. She mixes 6 pounds of pecans with a nut mixture that is 70% p
Marat540 [252]
So the best way to do these is concentration1 (%) × volume1 = concentration2 × volume2
Or C1V1 + C2V2 = C3V3, where C1 = 100% (bc ALL pecans), V1 = 6 lbs, C2 = 70%, C3 = 82%:
100%×6 + 70%×v2 = 82%×(6+v2)
100%=1.00, 70%=.7, 82%=.82
note: if none is poured out then v3 = v1+v2
6 + .7v2 = .82 (6+v2)
6 + .7v2 = 4.92 + .82v2
6 + .7v2 -.7v2 = 4.92 + .82v2 -.7v2
6 = 4.92 + .12v2
6-4.92 = 4.92-4.92 + .12v2
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that's only v2!!!

For the final poundage, we need v3:

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What is the value of -25 + 50 - 20 + (-12) Absolute Value
Taya2010 [7]
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aalyn [17]
We have 
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So 
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