San Antonio, Texas, is located about 30º north of the equator. If the radius of the Earth is about 3959 miles, how far to the ne
1 answer:
Answer: 2,073
Explanation:
1) Circumference of the Earth:
Circumference = 2π x radius
⇒ Circumference = 2π × 3959 miles = 24,875.13 miles
2) Distance between San Antonio and the Equator.
Note that that distance corresponds to the arc length of a sector of 30°.
That let's you to set the proportion:
From which you can clear the unknown:
x = 30 × 24,875.13 / 360 = 2,072.93
Which rounded to the neares mile is 2,073
Explanation:
1) Circumference of the Earth:
Circumference = 2π x radius
⇒ Circumference = 2π × 3959 miles = 24,875.13 miles
2) Distance between San Antonio and the Equator.
Note that that distance corresponds to the arc length of a sector of 30°.
That let's you to set the proportion:
From which you can clear the unknown:
x = 30 × 24,875.13 / 360 = 2,072.93
Which rounded to the neares mile is 2,073
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Answer:
The scatter diagram that contains the correlation coefficient closest to r = 1 is the first one shown in the attached images.
Step-by-step explanation:
The correlation coefficient "r" measures how much two variables x and y are related. When the variables are highly related, the value of r is closer to one and the points contained in the scatter diagrams are assimilated more and more to a line. When the value of r is positive the relation is crescent and therefore the slope of the line drawn by the points in the diagram has a positive slope
Therefore, to answer this question, one must search among the attached images for the dispersion diagram in which the points resemble a straight line with a positive slope.
The scatter diagram that meets the requirements mentioned is the first one that appears in the attached images
