Tired parents are trying to rest until morning, but Mollie, Alaina, and Carly tend to cry at random times, ensuring the parents will wake up, and sometimes be forced to stay up all night. On any given night, one and only one of these monsters will cry- there is a 10% chance Mollie will cry, a 50% chance Alaina will cry, and a 40% chance Carly will cry. There is a 30% chance that if Mollie cries, she will stay up all night; if Alaina cries, there is a 75% chance she will be up all night; if Carly cries, there is a 25% chance she will remain awake all night.

Find the probability that either Alaina or Mollie kept the parents up all night.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

21.4 i did it already for s1

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.