Area of triangle is
A=b•h/2
A=(10x+5)(2x-5)/2
A=20x^2-50x+10x-25/2
A=20x^2-40x-25/2
A=2(10x^2-20x-12.5)/2
cancel 2 in numerator and denominator
A=10x^2-20x-12.5 in^2
Hope this helps
Answer:
range = 9-1 or 8
Step-by-step explanation:
The radius of circle is 3.5 only
The answer to the question
Answer:
C.) -a^2 - a + 12
Step-by-step explanation:
(-a + 3) (a + 4)
FOIL (First, Outer, Inner, Last)
-a * a = -a^2
-a * 4 = -4a
3 * a = 3a
3 * 4 = 12
-4a + 3a = -a
Answer:
-a^2 - a + 12
