Which of the following best represents the average rate at which infants grow in height during the first four years after birth?

Mathematics

2 answers:

Valentin [98]3 years ago

8 0

The answer would be three inches per year or B. Hope this helped :)

zalisa [80]3 years ago

4 0

Answer:

B. 3 inches per year.

Step-by-step explanation:

Generally, Humans grow at a slow rate until we get the our puberty. The growth rate also depends on nutrition and the genetic. Most of the surveys shows that infants grow in height during the first four years after birth is "3 inches per year."

Therefore, the answer is B. 3 inches per year.

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5) You and a friend live 4 miles apart. You hear the sound of thunder 18 seconds before your friend hears it. Assuming sound tra

Leokris [45]

Answer:

see attached

Step-by-step explanation:

At 1100 ft per second for 18 seconds, the sound travels 19,800 ft, or 3.75 miles farther to my friend's house. The set of points that lie 3.75 miles farther from my friend's house than from my house form a hyperbolic curve. This is illustrated by the blue line in the attached graph. (My house is the red dot on the left; my friend's house is the red dot on the right.)

The lightning occurred somewhere on the blue curve.

___

If the lightning occurred on the line between our houses, it was 1/8 mile from my house and 3 7/8 mile from my friend's house. (That's close!)

_____

The formula for the curve in the graph is the distance formula applied to the set of points (x, y). It equates the difference of distance from the two houses to 3.75 miles. If one were to write the equation of the hyperbola in standard form, the equation would look a little different and a restriction would need to be applied so the formula would describe only one branch of the hyperbola.