Answer:
a = 17, b = 6
Step-by-step explanation:
Sides GF and GH are congruent, so we have ...
GF = GH
30 = 2a -4 . . . . substitute given values
15 = a -2 . . . . . divide by 2
17 = a . . . . . . . . add 2
Sides FJ and HJ are congruent, so we have ...
FJ = HJ
3b +6 = 24 . . . . substitute given values
b +2 = 8 . . . . . . divide by 3
b = 6 . . . . . . . . . subtract 2
The values of a and b are (a, b) = (17, 6).
<span>To use Law of Cosines, you need to know an angle and two sides.
The simplest case is if you know two sides (a and b) and the included angle (C)
c² = a² + b² − 2ab cos(C)
cos(A) = (b² + c² − a²) / (2bc)
cos(B) = (a² + c² − b²) / (2ac)
You can also use Law of Cosines if you know 2 sides (b and c), and non-included angle (C). We use first equation above, solving for a. Since the equation is a quadratic (with respect to unknown variable a), it is simpler to use Law of Sines in this case.
You can also use Law of Cosines if you know the 3 sides (a,b,c)
cos(A) = (b² + c² − a²) / (2bc)
cos(B) = (a² + c² − b²) / (2ac)
cos(C) = (a² + b² − c²) / (2ab)</span>
I think it’s C. I don’t know though.
A because they add up to 190 then you subtract that from 360 and get 170
Answer:
4n and 5p
Step-by-step explanation:
Because if it the cost of each your mulitplying and because you wanting to just define the variable p for pen and n for notebook all a variable is a letter than let you know what something is for using in math later
