Answer:
1. Because they are Vertically opposite
2. 2 lines that form a straight line and form 180 degrees when added are called a linear pair.
3. Because angle 1 and 2 is a linear pair and forms 180 degrees. The same goes for angles 2 and 3.
4. Because when they are a linear pair and together they form 180 degrees.
5. Angle 1 and 2, angles 2 and 3 are linear pairs. And linear pairs always form 180 degrees. So, they are both equal.
6. Because they are vertically opposite angles.
7. Because they are vertically opposite angles.
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Answer:
B
Step-by-step explanation:
To evaluate (f ￮ g)(x)
Substitute x = g(x) into f(x), that is
f(g(x))
= f(x - 3)
= (x - 3)² ← expand using FOIL
= x² - 6x + 9 → B
Circumference = 2πr = 27 cm
= 2 × 3.14 × r = 27
= 3.14 × r = 27/2
so, r = 
× 
= 4.2 cm
Hey there!
Here's your answer: m<BDC=69
Here's how I got it:<ADC=112; <ADB and <BDC together form <ABD.
you would add 6x+7and 12x-3 together to equal 112; 18x+4=112, and solve for x
next substitute 6 for x, into m<BDC=12x-3, and simplify!
Hope this helps!
15 is answer
15-9=6 and 15x6= 90
