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IgorLugansk [536]
2 years ago
14

Identify the constant of proportionality for each direct variation below.

Mathematics
1 answer:
andriy [413]2 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

The equation of 2 quantities in direct proportion is

y = kx ← k is the constant of proportionality

1

y = - 4x ← in standard form

with k = - 4

2

\frac{y}{x} = 2 ( multiply both sides by x )

y = 2x ← in standard form

with k = 2

3

\frac{x}{y} = 3 ( multiply both sides by y )

x = 3y ( divide both sides by 3 )

\frac{1}{3} x = y ← in standard form

with k = \frac{1}{3}

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Answer:

From our calculations the large jar is the best value for money because a penny buys more honey

Step-by-step explanation:

<h2>In this problem we are expected to determine which purchase of honey is the cheapest ? large jar or small jar ?.</h2><h2 />

We will determine which has the best value for money using the quantity a pound can purchase.  

firstly for the large jar.

if £4.10 will purchase 540g of honey then,

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cross multiplying to find x will have

x=  \frac{1.00*540g}{4.10}

x= 131.7grams

Hence for the large jar a penny would buy 131.7g of honey

secondly for the small jar

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cross multiplying to find x will have

x=\frac{1.00*360g}{2.81}\\x= 128.1gram

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4 0
3 years ago
Find the exact circumference of a circle with the given radius. 5 inches C = 2.5π in. 10π in. 25π in.
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The circumference, C, of a given circle may be calculated through the equation,
         
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2 years ago
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Step-by-step explanation:

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g(x) =10x +2

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