When Emily commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 25 minutes and a standard deviation of 2.5 minutes. Out
of the 203 days that Emily commutes to work per year, how many times would her
commute be shorter than 21 minutes, to the nearest whole number?

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1