Question

helpppp

Answer 1

What is the exact distance between points A and B?


A. 11 units

B. 85 units

Answer 2

Do you remember the formula for distance?

Answer 3

11 is my answer a

Answer 4

That doesn't seem to be correct.

Answer 5

\[d=\sqrt{(x _{2}-x _{1})^2+(y _{2}-y _{1})^2}\]

Answer 6

please hold while i use formula

Answer 7

Alright.

Answer 8

hint:
we can write this:
\[\begin{gathered}
d = \sqrt {{{\left( {{x_2} - {x_1}} \right)}^2} + {{\left( {{y_2} - {y_1}} \right)}^2}} = \hfill \\
\hfill \\
= \sqrt {{{\left( { - 4 - \left( { - 2} \right)} \right)}^2} + {{\left( { - 4 - 5} \right)}^2}} = \hfill \\
\hfill \\
= \sqrt {{{\left( 2 \right)}^2} + {{\left( { - 9} \right)}^2}} = \sqrt {4 + 81} = ...? \hfill \\
\end{gathered} \]

Answer 9

4+-81=85
-77=85
8.774=9.219

Answer 10

hint:
we get this:
\[\begin{gathered}
d = \sqrt {{{\left( {{x_2} - {x_1}} \right)}^2} + {{\left( {{y_2} - {y_1}} \right)}^2}} = \hfill \\
\hfill \\
= \sqrt {{{\left( { - 4 - \left( { - 2} \right)} \right)}^2} + {{\left( { - 4 - 5} \right)}^2}} = \hfill \\
\hfill \\
= \sqrt {{{\left( 2 \right)}^2} + {{\left( { - 9} \right)}^2}} = \sqrt {4 + 81} = \sqrt {85} \hfill \\
\hfill \\
\end{gathered} \]
so the requested distance is \(d= \sqrt{85}\)

Answer 11

9.21

Answer 12

yes!

Answer 13

Oh, I didn't look at the answer choices C

Answer 14

that's right! It is option C)

Answer 15

Thanks @Binary and @Michele_Laino

Answer 16

:)

Answer 17

Yes. C is right. No problem. :)