Your answer is C for sure I am!
Answer:
Segment BC = 36 mm or 3.6 cm
Step by Step Explanation:
There are 10 mm in 1 cm
meaning that segment AC is 40 mm long
if AB is 4 mm and it is one part of the two, then we need to subtract that from the total to find out what is left.
40 - 4 = 36
Segment BC = 36 mm or 3.6 cm
Given:
A triangle ABC.
The given expression for b is:
To find:
The expression that is equivalent to b.
Solution:
According to the Law of Cosines,
It can be written as:
...(i)
We have,
...(ii)
On comparing (i) and (ii), we get
Therefore, the required values are 
.
Answer:
x³ + 2x² - 19x - 20
Step-by-step explanation:
x + 1 = 0
x = -1
Substitute x = (-1) in the polynomial
x³ + 2x² - 19x - 20 = (-1)³ + 2*(-1)² - 19 *(-1) - 20
= -1 + 2 +19 - 20
= -1 - 20 + 2 + 19
= -21 + 21 = 0
So, (x + 10 ix a factor of x³ + 2x² -19x - 20
