Question

HELP PLEASE!!!

Yvette is trying to calculate the distance between point C(1, 2) and point D(7, 10). Which of the following expressions will she use?
A. square root of the quantity of 10 minus 2 all squared plus 7 minus 1 all squared
B. square root of the quantity of 10 minus 1 all squared plus 7 minus 2 all squared
C.square root of the quantity of 10 minus 7 all squared plus 2 minus 1 all squared
D. square root of the quantity of 7 minus 10 all squared plus 1 minus 2 all squared

Answer 1

A

Explanation:

sqrt (10 - 2)^2 + (7 - 1)^2

Answer 2

The distance between the points:

`d = \sqrt{( x_(2) - x_(1) ) ^(2) +(y _(2)-y _(1)) ^(2) } \\ d(CD) = \sqrt{(7-1) ^(2)+(10-2) ^(2) } = \\ = \sqrt{6 ^(2) +8 ^(2) }= √(100)=10`
Answer:
A ) Square root of the quantity of 10 minus 2 all squared plus 7 minus 1 all squared.