Ok so the equation is 45+x=2x+15 I know x=30 I just want to find the exterior part, please help due today!

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Question 10 of 211 pointuse the elimination method to solve the system of equations. choose thecorrect ordered pair.10x +2y = 643x - 4y = -36a. (4,12)b. (-3, 11)c. (2,10)d. (-5, 8)