We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.

+0

Help

0
189
1

The length of the segment between the points (2a, a-4) and (4, -1) is 2\sqrt{10} units. What is the product of all possible values for a?

Aug 26, 2018
edited by Guest  Aug 26, 2018

1+0 Answers

#1
+814
+2

The distance in the plane, that is: Formula: $$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$$ . We have the points, (2a, a-4) and (4,-1).

$$\sqrt{(4-2a)^2+(-1-a-4)^2}=2\sqrt{10}$$, so we get a=1, a=1/5. So, there are two values! Thus, 1*1/5=1/5!

Aug 26, 2018