If a test that has reliability r is lengthened by a factor n(n ≥ 1), the reliability R of the new test is given by R(n) = (nr)/(1 + (n − 1)r), 0 < r ≤ 1.If the reliability is r = 0.25, the equation becomes R(n) = 0.25n/(0.75 + 0.25n)

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17

they disappear if your absent from to long. i found out that the hard way.

step-by-step explanation:

brainliest lol i just need one more brainliest.

is there a question here?

step-by-step explanation:

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c