B.LECA
C.90^0
D.29^0
Acute is less than 90 but greater than 0.
Right angles at exactly 90 degrees
P=18 because 3 times two is 6 and 4 times 3 is 12 so when you add them you get 18
Answer:
Step-by-step explanation:
Formulas to know:
- Area of a circle:
- Circumference of a circle:
Since we know the circumference, we can use formula for the circumference of a circle to find the circle's radius:
Now we can plug in 
into the formula for an area of a circle:
Answer:
b = 40 and -40
Step-by-step explanation:
General form of Perfect square trinomial is a 2 + 2 a b + b 2
Therefore from 16 x 2 − b x + 25 a 2 = √ 16 x 2 , b 2 = 25 , then a = ± 4 x , b = ± 5 take consideration a=4x and b=-5 (different sign), then − b x = 2 ( 4 x ) ( − 5 ) − b x = − 40 x b = 40
The perfect square is ( 4 x − 5 ) 2 = 16 x 2 − 40 x + 25 .
if we consider a=4x and b=5 (same sign), then − b x = 2 ( 4 x ) ( 5 ) − b x = 40 x b = − 40
The perfect square is ( 4 x + 5 ) 2 = 16 x 2 + 40 x + 25 .
The first solution ( 4 x − 5 ) 2 is the best solution after comparing the expression given. I hope this helps, xx .
