4. two numbers, x and y, have a sum of 17 but a difference of 11. write a
system of equations that can be used to solve this and then use it to find
the solution.
5.the system of equations
5x + 2y = 8
-5x + 2y = -32
can be solved several ways.
student 1 wants to use addition. student 2 wants to use subtraction. who
is right? explain your answer.
i’m very stuck on it

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

Powerful women's group has claimed that men and women differ in attitudes about sexual discrimination. a group of 50 men (group 1) and 40 women (group 2) were asked if they thought sexual discrimination is a problem in the united states. of those sampled, 11 of the men and 19 of the women did believe that sexual discrimination is a problem. if the p-value turns out to be 0.035 (which is not the real value in this data set), then at = 0.05, you should fail to reject h0. at = 0.04, you should reject h0. at = 0.03, you should reject h0. none of these would be a correct statement.