What is the distance between points (1, 4) and (9, 16)? Round to the nearest tenth.
i got 14

Question

What is the distance between points (1, 4) and (9, 16)? Round to the nearest tenth.
i got 14

triciaal · Answer

you can use pythagorean theorem
the square of the distance = (change in y)^2 + (change in x)^2

rvc · Answer

sqrtx2-x1+y2-y1
$$\sqrt{(9-1)^{2}+(16-4)^{2}}$$
$$\sqrt{64+144} = \sqrt{208}$$

triciaal · Answer

to the nearest tenth means the answer to one decimal place

anonymous · Answer

so is 14.4??

triciaal · Answer

yes

anonymous · Answer

The midpoint between points (–3, 8) and (3, –4) is (0, y). What is y?
can you help me

triciaal · Answer

always calculate to one more place and then round
example for this problem you got 14.42 to one place 2 is less than 5 so drop it and the answer is 14.4

triciaal · Answer

if the calculated amount was 11.47 then the answer would be 11.5

triciaal · Answer

mid-point
(x1 + x2)/2  , (y1 + y2)/2 use the absolute value

triciaal · Answer

how about if you draw it so it's easier to see?

anonymous · Answer

|dw:1404194696523:dw|

anonymous · Answer

|dw:1404194734138:dw|