Which is the next step in the following construction of an equilateral triangle?

circle with center p and point a along circles edge, arcs along the circle at points b, c, d, e, and f in alphabetical order, and a line segment connecting points a and c

connect a and d with a straightedge.
connect c and d with a straightedge.
connect c and e with a straightedge.
connect d and f with a straightedge.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

What is the x-intercept and y-intercept of the equation 2x+1. 2o

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal