2 years ago

The speed limit is 55 kilometers per hour. What is the speed limit in miles per hour?

Mathematics

1 answer:

AleksandrR [38]2 years ago

8 0

Answer:

34.2 or 34.20

Step-by-step explanation:

Sometimes they accept 34.2 without the zero, but that's up to you

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Write the equation in slope-intercept form.<br> (2,-3) and (1,3)

Bess [88]

The slope is y=-6x+9

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3 years ago

Last math question.

siniylev [52]

Answer:

Step-by-step explanation:

$\text{The slope-intercept form of an equation of a line:}\\\\y=mx+b\\\\m-\text{slope}\\b-\text{y-intercept}\\\\\text{Let}\\\\k:y=m_1x+b_1\\l:y=m_2x+b_2\\\\k\ \perp\ l\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\k\ ||\ l\iff m_1=m_2\\=========================$

$\text{We have}\ y=5x+2\to m_1=5\\\\\text{therefore}\ m_2=5.\\\\\text{Put the value of the slope and the coordinates of the given point (-2, 1)}\\\text{to the equation of a line:}\\\\1=5(-2)+b\\1=-10+b\qquad\text{add 10 to both sides}\\1+10=-10+10+b\\11=b\to b=11\\\\\text{Finally:}\\\\y=5x+11$