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kykrilka [37]
3 years ago
7

Kim was walking down a rocky path. For 4 minutes, the elevation dropped uniformly. Altogether it dropped 8 feet. What was the ch

ange in elevation per minute for the 4 minutes?
Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0

Answer:

Change in elevation per minute = 2ft/min

Step-by-step explanation:

Change in elevation per minute = elevation ÷ time

Change in elevation per minute = 8÷4 = 2ft/min

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mestny [16]
So much clearer!  Thank you (seriously).

Use the point-slope form of the eq'n of a str. line.  Find the slope first:
         0-(-2.5)         2.5
m = ------------- = -------- = 1/2
           5 - 0              5

Then,    y-0 = (1/2)(x-5)

Which answer choice do you believe matches this?

7 0
3 years ago
A survey of 2400 was given to people who owned a certain type of car, 960 said they would buy that type of car again. What perce
nalin [4]

Divide the number satisfied by total people surveyed then multiply by 100 for the percent.

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3 years ago
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damaskus [11]

Answer:

60 = z

Step-by-step explanation:

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3 years ago
Which of the following equations represents a line that is perpendicular to
Andreyy89

Answer:

\large\boxed{y=\dfrac{1}{2}x}

Step-by-step explanation:

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

\text{We have the equation:}\ y=-2x+4\to m_1=-2.\\\\\text{Therefore}\ m_2=-\dfrac{1}{-2}=\dfrac{1}{2}.\\\\\text{We have the equation:}\ y=\dfrac{1}{2}x+b.\\\\\text{Put the coordinate of the point (4, 2) to the equation:}\\\\2=\dfrac{1}{2}(4)+b\\\\2=2+b\qquad\text{subtract 2 from both sides}\\\\0=b\to b=0.\\\\\text{Finally:}\\\\y=\dfrac{1}{2}x

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3 years ago
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Lostsunrise [7]

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Step-by-step explanation:

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