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VMariaS [17]
3 years ago
10

Find the distance between the two points. (−1, −3), (1, 3)

Mathematics
1 answer:
kirza4 [7]3 years ago
7 0

Answer:

2\sqrt{10} units

Step-by-step explanation:

Use the distance formula d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\ to find the distance between the two points. Substitute the x and y values of the points (-1,-3) and (1,3) into the formula and simplify:

d =\sqrt{(3-(-3))^2+(1-(-1))^2} \\d =\sqrt{(3+3)^2+(1+1)^2} \\d = \sqrt{(6)^2+(2)^2} \\d = \sqrt{36+4} \\d = \sqrt{40} \\d = 2\sqrt{10}

So, the distance is 2\sqrt{10} units.

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A certain westbound U.S. highway truck route near a river has a downhill grade of 9%. (a) Explain what a 9% downhill grade means
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Answer:

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Step-by-step explanation:

A Certain westbound U.S highway truck route near a river has a downhill grade of 9%

A) A 9% downhill grade means that the decrease in elevation of the road over the segment is 9% of the change in Horizontal distance over the same segment. In other words, for every 100 horizontal feet the road descends 9 feet and the road has a slope of 0.09 vertical feet per horizontal foot.

In other to make things clear, lets assume

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5 0
3 years ago
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Salsk061 [2.6K]

Answer:

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Step-by-step explanation:

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