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Question 1: x=12.5
6x+4x+2x+30=180
(One full line forming a semi circle would equal to 180 degrees all the angles given would therefore equal up to that value)
Add like terms to simplify;
12x+30=180
Use inverse operations to isolate the variable!
180-30=150
150/12=12.5
Check ur work!
6(12.5)+4(12.5)+2(12.5)+30=180
75+50+25+30=180
180=180
Question 2: Angle EAF = 25 degrees
Since x equals 12.5
and the equation given to represent the angle is 2x
2(12.5)=25
Question 3: Angle DAE= 50 degrees
x=12.5
Angle DAE=4x
4(12.5) = 50
Question 4: Angle CAD= 75 degrees
x= 12.5
Angle CAD= 6x
6(12.5) = 75
(if any are incorrect i apologize beforehand)
Answer:
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expression.
Check : 1 is the square of 1
Check : c1 is not a square !!
Ruling : Binomial can not be factored as the difference of two perfect squares]
cos^2x=0
Step-by-step explanation:
Answer:
y = 
<em>x</em> + 70
or
y = 70 
(They're both the same equation, whichever one you prefer you can use!)
