About 68% of sixth-grade students will have heights between inches and inches.

About 68% of sixth-grade students will have heights between 55.7 inches and 60.3 inches.

Step-by-step explanation:

The Empirical rule, also the 68–95–99.7 rule, states that for a population that is approximately normal or symmetrical, nearly all of the data values will lie within three standard deviations of the mean;

68% of data values will fall within one standard deviation from the mean

95% of data values will fall within two standard deviation from the mean

99.7% of data values will fall within three standard deviation from the mean

Now, assuming the heights of the sixth-grade students are approximately normal 68% of these students will have their heights fall within one standard deviation from the mean;

mean ± standard deviation

58 ± 2.3 = (55.7, 60.3)

Therefore, about 68% of sixth-grade students will have heights between 55.7 inches and 60.3 inches.

answer

see attachment

explanation

the given function is

this function has y-intercept at

-4 and a slope of 2.

note that, the graph has a positive slope.

the graph that represents this function is the straight line that moves upward from left to right.

the graph touches the y-axis at -4.

the correct choice is the graph shown in the attachment.

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .