Determine whether the graph is that of a function.
A. function
B. not a function
Answer: A
Mathematics
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Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.The three angles in a triangle always add up to 180°. If one angle in a triangle is 63° and the second is 2 times the third, what are the three angles?
A. 63°, 76°, 41° B. 63°, 78°, 39° C. 63°, 77°, 40° D. 63°, 79°, 38°
Mathematics
Add. Combine like terms, and write the answer in descending order.(6c2 - 7c + 8) + (-2c2 - 7c + 1)
A. 4c4 - 14c2 + 9 B. 4c2 - 7c + 9 C. 4c2 - 14c + 9 D. -12c2 - 7c + 9
Mathematics
Provide an appropriate response.Solve the equation: x - 2 = -5
A. x = 3 B. x = -7 C. x = 7 D. x = -3
Mathematics
Factor the trinomial.14 + 5x - x2
A. (2 + x)(7 - x) B. (x - 2)(x + 7) C. (2 - x)(7 - x) D. (2 - x)(7 + x)
Mathematics