Answer:
17
125
Step-by-step explanation:
exterior angle is equal to sum of interior opposite angle. so
( 2x + 6 ) + ( 5x ) = ( 8x - 11 )
7x + 6 = 8x - 11
x = 17
exterior angle = ( 8 * 17 ) - 11 = 125
Answer:
p=4
Step-by-step explanation:
first change all the addition signs in to minus if the numbers are negative. ex. p+-8 = p-8.
So the equation equals to -2(p-8)-2=6.
Next +2 to both sides to cancel out the -2 and you get -2(p-8)=8
Divide both sides by -2 and you get (p-8)=-4. At this point you can remove the parenthesis. So the equation is p-8=-4
Finally +8 to both sides and you get p=4
a is given to us so just plug a into the first equation:
b-3 - 3b =9
Add 3 to both sides:
b-3b=12
Combine like terms:
-2b=12
Divide by -2 to get b by itself:
b=-6
The only answer with b as -6 is the first one, (-9,-6)
