What is the fraction in decimal form? 21/6 enter your answer in the box.

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

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?