The number of cars at a dealership dropped from 64 to 48 after a weekend sale. what is the percent of decrease in the number of cars?
a. 20%
b. 25%
c. 33%
d. 75%

∆red ≅ ∆ by rule will give brainiest if possible

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.

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point