Distance to a Star The luminosity of a star is L = 5.8 X 1030W, and its brightness as viewed from the earth is B = 8.2 × 10-16 W/m². Find the distance of the star from the earth.

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Q: F is directly proportional to a. If F=24 when a=8 find, a when F=18

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Q: please solve it and show yor work

A: As given y varies inversely as x this implies

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A: The variable  is proportional to , and  when

Q: Find the estimated value of y when x=3. Round your answer to three decimal places.

A: It is given as the table which help us the calculation easily.

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A: Given y varies jointly with x & square revt at Z .If y = 30 when x = 3 & z = 25 .We have…

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A: Given that , A circle with tangent and secant line , To find the value of x.

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A: Given viscosity μ α T

Q: Algebra Question

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Q: Suppose that y varies directly as x. When x is 9, y is 4. Solve for y when x is 72. (Enter an exact…

A: y varies directly as x. So y=kx

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.