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AURORKA [14]
3 years ago
9

The variables x and y vary directly. Use the values to find the constant of proportionality, k. Then write an equation that rela

tes x and y. Write any fractions in simplest form.
y=20; x=12


k=
y=
Mathematics
1 answer:
Alexxx [7]3 years ago
7 0

Answer:

y=(5/3)x

Step-by-step explanation:

Since y varies directly with x, then the constant of proportionality is equal to k=y/x. Since y/x=20/12=5/3, then k=5/3. This means the equation to relate x and y is y=(5/3)x

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Answer:

20 I'm pretty sure it's right but if not sorry

Step-by-step explanation:

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16÷.8= 20

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3 years ago
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irina [24]

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Step-by-step explanation:

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The square of a whole number 'n' lies between 80 and 150. Find all possible values for 'n'.
pychu [463]
The square of a whole number n lies between 80 and 150, so n lies between √80 and √150.

\sqrt{80} \approx 8.9 \\
\sqrt{150} \approx 12.2

n is a whole number and lies between 8.9 and 12.2, so n can be 9, 10, 11, or 12.

The possible values for n are 9, 10, 11, and 12.
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3 years ago
Please answer it now in two minutes
makkiz [27]

Answer:

VX = 8.8 in

Step-by-step explanation:

By applying Sine rule in the right triangle WXV,

Sin(∠W) = \frac{\text{Opposite side}}{\text{Hypotenuse}}

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Sin(34)° = \frac{VX}{15}

VX = 15.Sin(34)°

     = 8.8379

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6 0
3 years ago
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Mekhanik [1.2K]

Answer:

Alvin: 49

Elga: 40

Step-by-step explanation:

  1. The equation is 89 = x + (x-9).
  2. Remove the parenthesis and combine the like terms. 89 = 2x - 9
  3. Add 9 on both sides. 98 = 2x
  4. Divide by 2 on both sides. x = 49
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7 0
3 years ago
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