You use a line of best fit for a set of data to make a prediction about an unknown value. the correlation coefficient for you data set is -0.993. how confident can you be that your answer predicted value will be reasonably close to the actual value? A. I can't be confident at all; this is about as close to a random guess as you can get.

B. I can be a little confident; it might be close, but probably won't be exact.

C I can be very confident; it will be close, but it probably won't be exact.

D. I can be certain that my predicted value will match the value exactly.

what i would say the best answer is a. 40.5

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4

x-150=475   x=625

step-by-step explanation:

if the bike after the sale ($150) is $475 then just simply add 150 to 475.

answer: 75°

step-by-step explanation:

∠esk is the supplement of ∠edk, so is 100°. ∠esd = 1/2·arc ed, so is 25°.

since ∠esk = ∠esd + ∠dsk

you have 100° = 25° + ∠dsk . .

fill in known values 75° = ∠dsk . . . . .

subtract 25°

step-by-step explanation: