HELP MEEEEEE ;-; PLEASE WORTH 20 POINTS
1 answer:
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Answer:
x = 34
Step-by-step explanation:
ΔABD and ΔBCD are both isosceles triangles
In ΔABD
AB =AD, hence ∠ABD = ∠ADB ( base angles are equal )
∠ABD = =
= 68°
∠DBC = 180° - 68° = 112° ( straight angle )
∠BCD = x = =
= 34
Answer:
9. x=-6, y=0
10. x=-9, y=-10
11. x=3, y=-1
Step-by-step explanation:
Multiply the first equation by 2.
Add the equations.
We figured out x now we have to figure out y. To figure out y plug in x into any equation.
Your answer is x = -6 and y = 0 for number nine.
Change the signs of the second equation becuase 3y and 3y are both positive. We need one of them to be negative.
Add them.
Now we have to figure out y.
x=-9 and y=-10 is your answer to number ten.
x=3 and y=-1 is the answer to number eleven. I hope this helps! Let me know if I got anything wrong.
Answer:
The domain of the function is all real values of x, except and
Step-by-step explanation:
We are given the following function:
It's a fraction, so the domain is all the real values except those in which the denominator is 0.
Denominator:
Quadratic equation with
Using bhaskara, the denominator is 0 for these following values of x:
The domain of the function is all real values of x, except and