Answer:
by the distance formula
the points are (2,2) and (-2,7)
and subtituting d=sqrt((2-(-2))^2+(2-7)^2)
which is equal to sqrt of 41
and it is equal to 6.40
The unit rate is:
chapters per hour
Step-by-step explanation:
Given
chapters read = 
Time = 
Unit rate is calculated by dividing the total chapters by total time
So,

Hence,
The unit rate is:
chapters per hour
Keywords: Unit rate, fractions
Learn more about fractions at:
#LearnwithBrainly
Answer:
8. yes
9. no
10. yes
Step-by-step explanation:
8. A horizontal line (y=3) is perpendicular to a vertical line (x=0).
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9. A horizontal line (y=2) is parallel to a horizontal line (y=-1/2). The lines are not perpendicular.
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10. A parallelogram is a rectangle if the sides are perpendicular. The slopes of the short sides are rise/run = -1, and the slopes of the long sides are rise/run = +1. These values have a product of -1, so the sides are perpendicular. The figure is a rectangle.
Percent means parts out of 100
30%=30/100=3/10
3/10 out of 720000 means 3/10 times 720,000=2160000/10=216,000
the answer is 216,000