Which subtraction expression has the difference 1 4i? (–2 6i) – (1 – 2i) (–2 6i) – (–1 – 2i) (3 5i) – (2 – i) (3 5i) – (2 i)

On a test the graders have a mean of 77 and a standard deviation of 8. if we can approximate the distribution of these graders by a number distribution what percent of the students. a) scores higher than 77? b) should pass the test (grades > 60)? c) should fail the test (grades < 60)?

How to study when you can’t get away from people and have a headache?

Draw a plain view of hexagonal bolt and square nut for a 24mm diameter according to the approximate dimension