What is the estimated difference of 8 6/11 - 5 7/13? (⬅Those are mixed number fractions.) Giving brainliest to the correct answer

A) 4 1/2

B) 4

C) 3 1/2

D) 3

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle