Answer the question.2x - 7y = -175x + 3y = 19If your friend was going to solve this system of equations by first eliminating y, what general suggestions would you make so your friend could start on this in a systematic way?
What will be an ideal response?
Answers may vary. One possibility: Multiply the first equation by 3, multiply the second equation by 7, and add the two resulting equations together. Solve the resulting equation for x. Substitute the solution for x into one of the original equations and solve for y. Finally, check your overall solution by substituting both values into the other original equation.
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Solve the problem.Two points A and B are on opposite sides of a building. A surveyor chooses a third point C 79 yd from B and 98 yd from A, with angle ACB measuring 59.3°. How far apart are A and B (to the nearest yard)?
A. 89 yd B. 107 yd C. 116 yd D. 98 yd
Solve the problem.John does 5 pushups on the first day of a 30-day month, and then increases the number of pushups by 3 pushups a day. How many pushups has he done by the end of the month?
A. 1545 B. 1450 C. 1500 D. 1455
Divide.(x2 - 6x - 16) ÷ (x - 8)
A. x + 2
B. x2 + 2
C. x - 2
D. x + 2 + 
Solve.
= 
A. 1 - i
, 1 + i
B. 1 - 
, 1 + 
C. -1 - 
, -1 + 
D. -1 - i
, -1 + i