3 years ago

Can 2x + 3y be simplified?

Mathematics

1 answer:

Wewaii [24]3 years ago

4 0

Answer:

Step-by-step explanation:

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From a position on the ground 50 meters away from the base of a building, the angle of elevation of the top of the building is 6

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Step-by-step explanation:

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3 years ago

PLS HELP 3x+4 = 2 (x - 1)

vodka [1.7K]

Answer:

x= -6

Step-by-step explanation:

3x+4= 2 (x - 1)

3x+4= 2x -2

Subtract 4 from both sides of the equation

Simplify

Subtract 2x from both sides of the equation

Simplify

= -6

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3 years ago

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17. Write the equation of a line that is perpendicular to the given line and that passes through the given point.

nataly862011 [7]

$\text{Let}\ k:y=m_1x+b_1\ \text{and}\ l:y=m_2x+b_2.\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\\text{We have the line in point-slope form:}\\\\y-y_1=m(x-x_1)\\\\m-slope\\\\y-2=\dfrac{7}{3}(x+5)\to m_1=\dfrac{7}{3}\\\\\text{therefore}\ m_2=-\dfrac{1}{\frac{7}{3}}=-\dfrac{3}{7}.\\\\\text{We have the slope}\ m=-\dfrac{3}{7}\ \text{and the point}\ (-4,\ 9).\ \text{Substitute:}\\\\y-9=-\dfrac{3}{7}(x-4))\\\\\boxed{y-9=-\dfrac{3}{7}(x+4)}$