Prove that the angle bisectors of the base angles of the isosceles triangle are congruent by one of the following rules:
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asa/saa
cannot be determined
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The sum of two numbers is 86, and their difference is 20. find the two numbers

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.