Answer:
x = 21º
Step-by-step explanation:
∆ ABC is isosceles therefor
Angles B and C are congruent
(180 - 18)/2 = 162/2 = 81º
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∆ BCD is equilateral therefor all angles are 60º
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x = = 81 - 60
x = 21º
Answer:
HERE ARE SOME EXAMPLES of problems that lead to simultaneous ... We must translate each verbal sentence into the language of algebra. ... To solve any system of two equations, we must reduce it to one equation in one of ... How many tickets of each kind were sold? ... The total interest on the investment was $2,100.
Step-by-step explanation:
1) The y- axis is where x = 0, so the line "y = -1/2x - 3" will cross the y-axis when x = 0. You plug in "x = 0" into the equation, and get y = 0 -3, so y = -3. That means the line " y = -1/2x - 3" will cross the y-axis ar (0, -3)
2) If there are 2 parallel lines, then there is no solution, because the definition of parallel lines is, " 2 lines in the same plane, that never meet." That makes the solution inconsistent.
When you have minus negative it is the same result as plus positive, so 3+4 is what you're looking for
