Answer:
B. scalene
Step-by-step explanation:
A. acute - all angles are less than 90 degrees
B. scalene - all sides are different lengths
C.equilateral - all sides the same length
D. right- one angle is 90 degrees
Answer:
2(x-9)(x+5)
Step-by-step explanation:
Answer:
The first blank is 81
+9=x-1
The second blank is 9x+3=x^2-1
Step-by-step explanation:
For the first part, you must set up the equation (9x+3)^2 then you must multiply the exponent to the inside exponents 
+
next, simplify.
81+9=x-1
For part two, set up equation. 
Then simplify 9x+3= 
Answer:
121.5625
Step-by-step explanation:
Answer:
-20
Step-by-step explanation:
Complete the square to find the vertex of this parablola x^2-8x-y-4=0 {the second one of -20; so 4,-20}
