Answer:
x = 50
Step-by-step explanation:
In a parallelogram, consecutive angles are supplementary, thus
∠ A + ∠ B = 180 , substitute values
2x + 2x - 20 = 180
4x - 20 = 180 ( add 20 to both sides )
4x = 200 ( divide both sides by 4 )
x = 50
Solve for the first variable in one of the equations, then substitute the rest into the other equation. The answer is: (3, -1). Use https://www.mathpapa.com/algebra-calculator.html to graph.
Answer:
x=50
Step-by-step explanation:
Look at the triangle as a whole. This is a 30-60-90 triangle by speculation. You can see that the hypotenuse is equal to 100. By using sine (you can use cosine as well) , you get the expression, "(sin 30 degrees) = x/100" since sin is the opposite side over the hypotenuse. Do some basic trigonometry to get "1/2 = x/100". By now, you should know that 50/100 is the same as 1/2.
The answer is A.
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Step-by-step explanation: