Which expression gives the distance between the

Ответ:

winnie45

09.03.2022

For this case we have that by definition, the distance between two points is given by:

$d = \sqrt {(x_ {2} -x_ {1}) ^ 2+ (y_ {2} -y_ {1}) ^ 2}$

We have the following points:

$(x_ {1}, y_ {1}) = (6, -2)\\(x_ {2}, y_ {2}) = (- 3,4)$

Substituting we have:

$d = \sqrt {(- 3-6) ^ 2 + (4 - (- 2)) ^ 2}\\d = \sqrt {(- 3-6) ^ 2 + (4 + 2) ^ 2}$

Option B

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kanajahbunn

11.02.2020

$1.6

Step-by-step explanation:

We need to find the cost of 80 cm of copper pipe at $2 a metre.

Cost of 1 metre = $2

80 cm = 0.8 m

It means,

0.8 m = $2 × 0.8

= $1.6

So, the cost of 80 cm of copper pipe is equal to $1.6.

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