Christina used the following expression to calculate the average ages of her three program users: average = age1 + age2 + age3 / 3 however, her output is not correct. what did she do wrong? a. she did not use parentheses around the age values to indicate the proper order of operations. b. she did not use quotation marks around the age values to indicate the proper order of operations. c. she should have used the multiplication symbol instead of the division symbol. d. she should have used a string function to perform the calculation.

Print "usernum1 is negative." if usernum1 is less than 0. end with newline. convert usernum2 to 0 if usernum2 is greater than 10. otherwise, print "usernum2 is less than or equal to 10.". end with newline

I'll mark brainliest if answered right! with which feature or menu option of a word processing program can you make an image like this? you can get this image using the option of a word processing program.

The volume v and paper surface area a of a conical paper cup are given by where r is the radius of the base of the cone and h is the height of the cone. a. by eliminating h, obtain the expression for a as a function of r and v. b. create a user-de ned function that accepts r as the only argument and computes a for a given value of v. declare v to be global within the function. c. for v ! 10 in.3 , use the function with the fminbnd function to compute the value of r that minimizes the area a. what is the corresponding value of the height h? investigate the sensitivity of the solution by plotting v versus r. how much can r vary about its optimal value before the area increases 10 percent above its minimum value?