Which type of valve guide is most often used in a cast-iron head? a. bronze b. thin wall sleeve c. powdered metal d. integral

Hurry: the angle measures associated with which set of ordered pairs share the same reference angle? (-square-root 3/2, 1/2) , (-1/2, -square-root 3/2) (1/2, -square-root 3/2) , (-square-root 3/2, 1/2) (-1/2, -square-root 3/2), (1/2, square-root 3/2) (square-root 3/2, 1/2) , (1/2, square-root 3/2)

Which tip applies to the aspire test and psat equally

Which of these is a lower subgroup a. kingdom b. order c. genus d. species