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3 years ago

A line passes through point (5,4) and has a slope of 4/5. Find the equation of the line in slope-intercept form.

Mathematics

1 answer:

iren [92.7K]3 years ago

7 0

Answer:

Y = 4/5x + 0

Step-by-step explanation:

y - 4 = 4/5(x-5)

y-4=4/5x-4

y=4/5x-4+4

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When the sum of \, 528 \, and three times a positive number is subtracted from the square of the number, the result is \, 120. F

aleksandr82 [10.1K]

Let $x$ be the unknown number. So, three times that number means $3x$ , and the square of the number is $x^2$

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$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

If you plug the values from your equation, you have

$x_{1,2} = \dfrac{3\pm\sqrt{9-4\cdot(-648)}}{2} = \dfrac{3\pm\sqrt{9+2592}}{2} = \dfrac{3\pm\sqrt{2601}}{2} = \dfrac{3\pm51}{2}$

So, the two solutions would be

$x = \dfrac{3+51}{2} = \dfrac{54}{2} = 27$

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baherus [9]

Answer:

How tall is he semicirlce?

Step-by-step explanation:

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