The grades on a language midterm at Santa Rita are roughly symmetric with u = 77 and o = 3.5. Tiffany scored 80 on the exam.
Find the Z-score for Tiffany's exam grade. Round to two decimal places.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Find the y-intercept and x-intercept for the equation 5x-3y=60 what is the y-intercept

In the diagram, gef and hef are congruent. what is the value of x