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serious [3.7K]
3 years ago
9

Please solve this problem for me.

Mathematics
2 answers:
xenn [34]3 years ago
7 0

He might have done it backwards.

1/63

and could be 63 miles in 1 hour

63/1.

Because the graph looks good. (i think)

iragen [17]3 years ago
6 0

Answer:

It is 63 or 63/1. Billy used change in x over change in y, and the correct formula for slope is the change in y over the change in x.

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Find the perimeter of the triangle to the nearest whole unit.<br> 18.<br> 16.<br> 14.<br> 12.
devlian [24]

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14

Step-by-step explanation:

Perimeter of the ∆ = sum of the length of the 3 sides.

The length of the 3 sides can be calculated by using the distance formula, d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}, to find the distance between the vertices of the ∆.

The coordinates of the 3 vertices are:

(-1, 3), (2, 2), (-2, -2)

Distance between (-1, 3) and (2, 2):

Let,

(-1, 3) = (x_1, y_1)

(2, 2) = (x_2, y_2)

d = \sqrt{(2 -(-1))^2 + (2 - 3)^2}

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d = \sqrt{9 + 1} = \sqrt{10} = 3.2 units

Distance between (2, 2) and (-2, -2)

Let,

(2, 2) = (x_1, y_1)

(-2, -2) = (x_2, y_2)

d = \sqrt{(-2 - 2)^2 + (-2 - 2)^2}

d = \sqrt{(-4)^2 + (-4)^2}

d = \sqrt{16 + 16} = \sqrt{32} = 5.7 units

Distance between (-2, -2) and (-1, 3)

Let,

(-2, -2) = (x_1, y_1)

(-1, 3) = (x_2, y_2)

d = \sqrt{(-1 -(-2))^2 + (3 -(-2))^2}

d = \sqrt{(1)^2 + (5)^2}

d = \sqrt{1 + 25} = \sqrt{26} = 5.1 units

Perimeter of triangle = 3.2 + 5.7 + 5.1 = 14.0 units

8 0
3 years ago
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