Sandra has 4 math tests this marking period. She recieved 90%, 87%, and 92% on the first 3. with is the minimal score she needs on her last test in order to average at least 90% in math class?

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

Is ofat (-25, 0), (25, 0) co- (0, -15), (0, 15)?