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olga_2 [115]
3 years ago
6

To find out how fast a tree grows, you can measure its trunk. A giant red oak's diameter was 248 inches in 1965. The tree's diam

eter had grown to 251 inches in 2005. Find the average rate of change in the diameter of the tree per year.
Mathematics
1 answer:
Semmy [17]3 years ago
5 0
You need to find the slope
251-248. 3
------------- = --------
2005-1965. 40
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Write the equation of the line which passes through (1, 2) and with slope of −1/3
Sati [7]

Answer:

<h2>          x + 3y = 7            </h2>

Step-by-step explanation:

The equation of a line which passes through <em>(x₁, y₁)</em> and with slope of <em>m</em> in point-slope form:

                                y - y₁ = m(x - x₁)

m = -¹/₃

(1, 2)    ⇒   x₁ = 1,  y₁ = 2

Therefore,  the equation of the line which passes through (1, 2) and with slope of −1/3 in point-slope form:

y - 2 = -¹/₃(x - 1)

y - 2 = -¹/₃x + ¹/₃                     {add ¹/₃x to both sides}

¹/₃x + y - 2 = ¹/₃                     {add 2 to both sides}

¹/₃x + y = 2¹/₃                       {multiply both sides by 3}

x + 3y = 7            

8 0
3 years ago
For a craft project, Jackie spent 45 minutes beading, 10 minutes painting, and 25
anygoal [31]

Answer:

1 hour and 20 minutes

Step-by-step explanation:

45+25+10=80 minutes which equal 1 hour and 20 minutes

3 0
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you buy a ring box as a birthday gift that is in the shape of a triangular prism. what is the least amount of wrapping paper nee
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What are the measurements

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Answer:

There are 8 boys for every 10 girls. This is 6 equal groups. Equal ratio

Step-by-step explanation:

6 0
3 years ago
Rapper DaBaby drove at a speed of 45 mph in front of Coosa High School on his way home from North Carolina. What was his speed i
NeTakaya
To find the answer, set up an equation:
\frac{45 \: miles}{1 \: hour}  \times  \frac{1000 \: meters}{1 \: mile}  \times  \frac{1 \: hour}{3600 \: seconds}  =
Using this set up we can cross out the units that are on opposite sides of the proportion such as miles and hours, leaving us with the desired units of meters and seconds. Then calculate m/s by multiplying 45 by 1000 meters and then dividing that value by 3600 seconds.

The resulting answer is 45mph = 12.5 m/s
3 0
3 years ago
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