(- 3/4) + (-3/8)
= (- 6/8) - 3/8
= negative 9/8
Answer:
C=120 degrees
Step-by-step explanation:
We can use the law of cosines to find an angle when we have all three sides
(7)^2 = (5)^2 + (3)^2 -(2)(5)(3)Cos(C)
49 = 25 +9 -30Cos(c)
49= 34 -30Cos(c)
15 = -30Cos(c)
Cos(c) = -1/2
C=120 degrees
Given:
The system of equation is,
-------- (1)
-------- (2)
To find the solution.
To solve the system of equation,
From (1) we get, 
Putting this value into (2) we get,

or, 
or, 
or, 
or, 
or, 
or, 
From (1) we get,

or, 
or, 
Hence,
The solution is
and 
Answer:
A and B
Step-by-step explanation:
7 over 16 as a decimal is 0.4375