Each problem below has an error in the answer. Find the error, explain how to correct the mistake. a) 10 × 0.5 It eaquls 50 b)

Given that abcd is a rhombus, what is the value of x?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.