The score on a geometry test are normally distributed with a mean of 80 and a standard deviation of 5, the test scores range from 0 to a 100, 12 students had test scores between 80 and 90. Estimate the number of students who took the test.

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.

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