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3 years ago

Suppose y varies directly with x. write an equation relating x and y. y=7 when x=42

Mathematics

1 answer:

WARRIOR [948]3 years ago

5 0

Answer:

y = $\frac{1}{6}$ x

Step-by-step explanation:

Given y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the given condition that y = 7 when x = 42

k = $\frac{y}{x}$ = $\frac{7}{42}$ = $\frac{1}{6}$

y = $\frac{1}{6}$ x ← equation of variation

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2 years ago

Solve the system of equations

ira [324]

Answer:

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Add the two equations to eliminate the x-variable.

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3 years ago

Read 2 more answers

For the month of March in a certain city, 57% of the days are cloudy. Also in the month of March in the same city, 55% of the da

oksian1 [2.3K]

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Step-by-step explanation:

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3 years ago

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The calculations can be done by a calculator like Excel:

1) In each cell of a same column, write the data you want to know the deviation.

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2 years ago

-6p - 21 = 3p - 12 solve the equation

grigory [225]

Answer:

p = 1

Step-by-step explanation:

-6p - 21 = 3p - 12

+6p +6p

-21 = 9p - 12

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9 = 9p

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9 9

1 = p

p = 1

8 0

3 years ago

Read 2 more answers