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ayoismeisalex
30.08.2019 •
Mathematics
Could someone tell me on how to get the correct answer, im correcting a test to raise my grade, and i need to show my work on how i got the answer for it to count as a point, someone !
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Ответ:
a spring stretches as force is applied to it. the more force, the more stretching.
here, y represents the length of the spring. if no force is applied, then the spring is 1 inch long. see where the line crosses the y-axis? the coordinates of the y-intercept are (0,1). the equation of the line is y=0.73x+1.
now supposing you apply a 1-lb stretching force to the spring, which is 1 inch long before that force is applied. this stretching force will extend the spring by 0.73 inch: y=0.73(inch/lb)(1 lb) + 1 inch, or 0.73 inch + 1 inch, or 1.73 inch. focus on the units of measurement of the "slope" of this line/function.
in summary,
if no stretching force is applied, the spring has a natural length of 1 inch.
if a 1-lb str. force is applied, the spring's length will be 1 inch + (0.73 in/lb)(1 lb), or 1.73 inch.
if a 2-lb str. force is app'd, the length will be 1 inch + (0.73 in/lb)(2 lb), or
1 inch + 1.46 inches = 2.46 inches.
and so on.
any questions about this? if so, ask them now.
Ответ:
the correct answer is $30
Step-by-step explanation: