The number of calls received by a certain ticket agency in a given hour is normally distributed. The mean number of calls is 200, and the standard deviation is 25. During a given hour, what is the probability that the agency will receive

3x + 4y = 5 x- 3y = -7 solve by substitution

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap

Simplify the rational expression. state any restrictions on the variable. t^2-4t-12 / t-8 the / is a fraction sign.