C
Step-by-step explanation:
Answer:
firstable give c+b a polynomial value like x
so its will be x^2+11x+30
after the we have to factor it
30=6×5
and 11=6+5
so its will become
(x+6)×(x+5)=x^2+11x+30
x=c+d
(c+d+6)×(c+d+5)=(c+d)^2+11(c+d)+30
have a great day
Answer: x=+25
Step-by-step explanation:
(5x+4)=(8x-71)
first move all terms to the left:
(5x+4)-((8x-71))=0
second get rid of parentheses
5x-((8x-71))+4=0
Third calculate terms in parentheses: -((8x-71)), so:
(8x-71)
Fourth get rid of parentheses
8x-71
5th to the equation:
-(8x-71)
6th get rid of parentheses
5x-8x+71+4=0
7th add all the numbers together, and all the variables
-3x+75=0
8th move all terms containing x to the left, all other terms to the right
-3x=-75
x=-75/-3
x=+25x=+25x=+25x=+25x=+25x=+25x=+25
Answer:
7/10 pi (radians)
Step-by-step explanation:
The formula for sector area is (angle * r^2)/2
140pi = angle*r^2/2
multiply both sides by 2
280pi = angle * r^2
r = 20 cm (substitute)
280pi = angle * (20)^2
280pi = angle * 400
Divide both sides by 400
7/10 pi = angle
Answer:
statement: 2. both pairs of parallel lines are congruent
reason: 2. def. of a parallelogram
and that should be all you need