In the given figure, PTR is tangent of a circle. if AT-PT and APT = 20° what is the value ABT? a. 40° b. 30° c. 60° d. 50°
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Use complete sentences to differentiate between a regular tessellation, and a pure tessellation. be sure to include specific types of polygons in your explanation.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.