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2 years ago

If y varies directly as x and inversely as z and y = 4 when x = 2 and z = 7, find y when x =

Mathematics

1 answer:

S_A_V [24]2 years ago

4 0

Answer:

y = 28

Step-by-step explanation:

Given that y varies directly as x and inversely as z then the equation relating them is

y = $\frac{kx}{z}$ ← k is the constant of variation

To find k use the condition y = 4 when x = 2 and z = 7, then

4 = $\frac{2k}{7}$ ( multiply both sides by 7 )

28 = 2k ( divide both sides by 2 )

14 = k

y = $\frac{14x}{z}$ ← equation of variation

When x = 6 and z = 3 , then

y = $\frac{14(6)}{3}$ = 14 × 2 = 28

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The function y=60/x relates y, the time in hours that it takes micheal to travel to his grandparents house,to x , his average sp

Andrews [41]

Answer:

60 represents the distance

Step-by-step explanation:

Given : y is the time in hours that it takes Micheal to travel to his grandparents house,

x is his average speed in miles per hour.

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Solution :

Time= y

x = speed

So, To find distance we will use formula :

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On comparing A and B

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Yuri [45]

Answer:

Step-by-step explanation:

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2 years ago

The prism has a surface area of 1312 mm2.

777dan777 [17]

So each dimention is 32 by 8 by 10
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2 years ago

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solong [7]

Answer:

$\large\boxed{b\geq3\to b\in[3,\ \infty)}$

Step-by-step explanation:

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$,\ \geq-\text{line to the right}\\-\text{o}\text{pen circle}\\\leq,\ \geq-\text{closed circle}$

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2 years ago

Function 1 is represented by a verbal description and function 2 is given by an equation

sergiy2304 [10]

Use you graphing calculator in the y equals button

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2 years ago

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