Answer: 13
Step-by-step explanation:
If you remember the quadratic equation formula;

You can easily extract what is under the root to find the discriminant.

a = 3
b = 7
c = 3

Answer:
The correct option is C ) 109.5°
Therefore,

Step-by-step explanation:
Given:
In Triangle DEF
d = 10
e = 18
f = 12
To Find
angle E = ?
Solution:
In Triangle DEF , Cosine Rule says

Substituting the values we get


Therefore,

............As it is in Second Quadrant
Therefore,

Answer:
11 ≤ n
Explanation:

More than indicates the minimum value, so you use the greater than or equal to.
The above answer is written in reverse, which the exact same result.
I am joyous to assist you anytime.
Answer:
C. 1 solution
Step-by-step explanation:
I calculated logically
Answer:
Step-by-step explanation:
1
*
=
*
cross cancel then you have
:)