Answer:
83.8 cm
Step-by-step explanation:
It is surprisingly a rectangle. Imagine the shape as a piece of clay, and then cut through it. This is the best way to visualize this
Answer:
41.85 or 42
Step-by-step explanation:
65.30 - 19.70
= 45.60
45.60 + (-3 3/4) =
41.85
Round to 42
The rational root theorem tells you all roots are of the form
±(factor of 2)/(factor of 3)
We know one of the roots is -1 and all roots are negative, so the remaining roots must be of the form
-(factor of 2)/(factor of 3)
which is to say, two of
-1/3, -2/3, -1, -2
Since the roots are distinct, they must be -2 and -1/3. Then the factorization of the given polynomial is
(x +1)(x +2)(3x +1)
which multiplies out to be
3x³ +10x² +9x +2
a = 10
b = 9