Which method should be used to solve the system? Explain your answer, including a description of the first step.x2 - y2 = 367x + y = -7
What will be an ideal response?
Substitution should be used, because using elimination would mean introducing an xy term into the second equation unnecessarily. The second equation should be solved for y.
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Use the ac method to factor the trinomial, or state that the trinomial is prime.6x2 + 13x + 6
A. (2x + 3)(3x + 2) B. (6x + 3)(x + 2) C. (2x - 3)(3x - 2) D. prime
Solve the problem.The number of students in a school in year n is estimated by the model
. About how many students are in the school in each of the first three years?
A. 105, 130, 163 B. 105, 130, 151 C. 109, 130, 163 D. 118, 143, 176
Perform the arithmetic.-2 + (-3)
A. -5 B. 5 C. 1 D. -1
In triangle ABC, the measure of ?B is two times the measure of ?A. The measure of ?C is a thirty degrees month than ?B. Find the measure of ?B.
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