Without doing any calculations, is (-3/4) with positive 13 exponent positive or negative? explain your reasoning​

What is the area of the trapezoid shown ?

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?