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RoseWind [281]
2 years ago
12

Holly's favorite book is about Johnny Appleseed, the American pioneer who planted apple trees all across the country. Inspired b

y the story, Holly plants an apple seed in her backyard and tends the seed as it slowly grows into a tree. The proportional relationship between the age of Holly's apple tree (in years), x, and the height of the tree (in feet), y, can be modeled by the equation y = 1.5x.
If the tree is 5.25 feet tall, how many years has the tree grown?
Mathematics
2 answers:
Snowcat [4.5K]2 years ago
4 0

Answer:

3.5.

Explanation

The tree has grown for 3.5 years.

y = 1.5x → 5.25 = 1.5x → x =  

5.25

1.50

= 3.5

Inga [223]2 years ago
3 0

Answer:

  3.5 years

Step-by-step explanation:

Fill in the given number and solve for x.

  y = 1.5x

  5.25 = 1.5x . . . . . . with given height in feet

  5.25/1.5 = x = 3.5 . . . . . divide by 1.5 to find age in years

The tree has grown for 3.5 years.

You might be interested in
part b is: if the energy release of one earthquake is 10,000 times that of another, how much larger is the Richter scale reading
kotegsom [21]

You could use the information from part A to get B. I'm not sure if you want A or not, so I'll do it as well.

A

Eo = 10^4.4 Joules

E = 2 * 10^15

Formula

M = (2/3) log (E/Eo)

M = 2/3 * log (2 * 10^15/10^(4.4) )

M = 2/3 * log( 7.9621* 10^10)

M = 2/3 * 10.901

M = 7.26735 on the Richter scale. That is a huge amount of energy.

Part B

Suppose that you use Eo and your base. Eo is 10^4.4

Now the new earthquake is E = 10000 * Eo

So what you get now is M = (2/3)* Log(10000 * Eo / Eo )

The Eo's cancel out.

M = 2/3 * log(10000)

M = 2/3 of 4

M = 8/3

M = 2.6667 difference in the Richter Scale Reading. It is still an awful lot of energy.

What this tells you is that if the original reading was (say) 6 then the 10000 times bigger reading would 8.266667

Answer: M = 2.6667


8 0
3 years ago
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6 0
3 years ago
Aiden is 27 inches tall. He is 3/8 as tall as his father. How y’all is his father?
Paul [167]

27 inches ......... 3/8

x inches .............8/8

<h3>x = (27×8/8)/(3/8) = 27×8/3 = 216/3 = 72 inches (father)</h3>
7 0
3 years ago
Travel A train makes a trip at 65 mi/h. A plane
Sladkaya [172]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
Is the percent increase from 50 to 70 equal to the percent decrease from 70 to 50? Explain.
Salsk061 [2.6K]

Answer:

  • No

Step-by-step explanation:

  • <em>Percent change is the difference in numbers divided by initial number converted to percent value.</em>

<u>Percent increase:</u>

  • (70 - 50)/50*100% = 40%

<u>Percent decrease:</u>

  • (70 - 50)/70*100% = 28.57%

<u>Compare:</u>

  • 40% ≠ 28.57%
4 0
2 years ago
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