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3 years ago

URGENT! Which equation could be solved using this application of the quadratic formula?

Mathematics

1 answer:

asambeis [7]3 years ago

3 0

Use Photo math. It works for those.

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3 years ago

3-4x-2

sp2606 [1]

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Step-by-step explanation:

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Mrrafil [7]

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3 years ago

Need help! A. y= -x+2 B. y=2x+2 C. y=2x-1 D. y=5x+2

Anastaziya [24]

Answer:

$\large\boxed{y=5x+2}$

Step-by-step explanation:

$\text{Let:}\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\\text{then}\\\\k\ ||\ l\iff m_1=m_2\\\\k \perp l\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\==================================$

$\text{We have the equation of a line:}\\\\y=-\dfrac{1}{5}x+4\to m_1=-\dfrac{1}{5}\\\\\text{Therefore}\\\\m_2=-\dfrac{1}{-\frac{1}{5}}=-\left(-\dfrac{5}{1}\right)=5\\\\\text{Initially, our equation has the form}\\\\y=5x+b$

$\text{The line should pass through point (-1, -3).}\\\text{We substitute the coordinates of the point into the equation:}\\\\-3=5(-1)+b\\-3=-5+b\qquad\text{add 5 to both sides}\\-3+5=-5+5+b\\2=b\to b=2\\\\\text{Finally:}\\\\y=5x+2$

5 0

4 years ago

Read 2 more answers

3x - 5y = 7 2x + 5y = 13

dolphi86 [110]

Answer:

x = 4, y = 3/5

Step-by-step explanation:

3x - 5y = 7

2x + 5y = 13

add the equations

5x = 20

x = 4

plug in x for one of the equations

2(5) + 5y = 13

10 + 5y = 13

5y = 3

y = 3/5

4 0

3 years ago

*URGENT!* Which equation could be solved using this application of the quadratic formula?

URGENT! Which equation could be solved using this application of the quadratic formula?