Answer:
Step-by-step explanation:
General form of quadratic equation:
ax^2+bx+c=0
ax^2+bx=-c
To complete the square, we will divide the coefficient of x in the general quadratic equation as written above and divide by 2
I'm the question;
x^2-20x+13=0
x^2-20x=-13
The coefficient of x =-20
Divide the coefficient by 2 and square the result afterwards
-20/2= - 10
(-10)^2= 100
Add 100 to both sides of the equation
x^2-20x+100=-13+100
x^2-20x+100=87
x^2-10x-10x+100=87
x(x-10)-10(x-10)=87
(x-10)(x-10)=87
(x-10)^2=87
Answer is 10,87
Tbh i dont know i just need points to ask a question sorry :/
Remember that the degree measure of each exterior angle of a polygon can be found through the formula
where 
is the number of sides on the polygon.
Since a pentagon has five sides, the degree measures of each of its five sides would be:
Thus, our answer is Choice B, or 72 degrees.
Answer:
Step-by-step explanation:
Let the numbers be x , y
Sum of two numers = -7
x + y = -7------------(I)
Two times the first number equals 4 the second number.
2x = 4y ----------(II)
Divide both sides by 2
x = 2y
Subtitute x = 2y in equation (I)
2y + y = -7
3y = -7
y = -7/3
Plugin y = -7/3 in equation (II)
Answer:
line AB intersecting line GH at K
Angie's Proof Statement Justification 1. Segment GH intersects segment AB at K 1. Given 2. m∠AKG + m∠GKB = 180° m∠GKB + m∠HKB = 180° 2. Definition of Supplementary Angles 3. m∠AKG + m∠ GKB = m∠GKB + m∠HKB 3. Substitution Property 4. m∠AKG = m∠HKB 4. Subtraction Property
Step-by-step explanation: my teacher said good job
