Suppose a triangle has sides a, b, and c let theta be the angle opposite the side of length a. If cos theta < 0 what must be true?

a - b^2+c^2>a^2

b - a^2+b^2=c^2

c - b^2+c^2 d - a^2+b^2>c^2

Solve 2/3x-1/5>1 X>9/15

What is the sum of 1/2 (4x+4) + (2x+8)

What are solutions to 12x to the third power

There are 10 students in a math class. Nine of the students had the following final exam scores: 68% 47% 81% 96% 91% 84% 61% 66% 76% what would the tenth student need to earn on the final exam so that the average final Exam score for all 10 students

If you pour a cup of coffee that is 200'F, and set it on a desk in a room that is 68'F, and 10 minutes later it is 145'F, what temperature will it be 15 minutes after you originally poured it?

5. x2 and 5x? What's the answer

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If AC=20, AE=25, and AB=5 what is the length of AD?

17/25 in decimal form and does it terminate or repeat

Which of the following expression is equivalent to 6^-7? A 1 / (-6) ^-7 B 1/6^7 C (-6^) - 7 D 1/6^-7