Line segment RS is congruent to line segment RT, angle S is congruent angle T. Prove triangle RST is congruent to triangle RTS

Ihave a 69 and an 82. the 69 is worth 40% of my grade and the 82 is worth 15%. can someone tell me my current average grade.

What is the simplified expression for 6(2(y+x))

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%