The Post Oak Savanah ecoregion of Texas was named for the groups of oak trees that stretched across parts of the grassland. Which statement best describes how these groups of oak trees affect erosion in the area?
A.
They increase water erosion by absorbing water from the soil.
B.
They decrease water erosion by limiting the growth of grasses.
C.
They increase wind erosion by deflecting the wind.
D.
They decrease wind erosion by blocking the wind.

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

2

step-by-step explanation:

-1   1/6.   you dont subtract the denominators

step-by-step explanation:

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.