Answer:
x = ± 4
Step-by-step explanation:
Given
x² = 96 ( take the square root of both sides )
x = ± 
= ± 
= 
× = ± 4
Answer:
8² = 4² + 5² - 2(4)(5) cos(P)
which is the third option
Explanation:
The general rule of cosine is:
a² = b² + c² - 2bc*cos(A)
In our triangle:
a is substituted by p = 8 cm
b is substituted by n = 4 cm
c is substituted by m = 5 cm
A is substituted by P which we want to find
Replace the variables in the general equation with the givens as follows:
p² = n² + m² - 2mn*cos(P)
8² = 4² + 5² - 2(4)(5) cos(P)
Hope this helps :)
Answer:
Yes, *2
Step-by-step explanation:
The second figure is exactly half of the first figure
For the equation 
take the 
from both sides:
Find x:
Answer: correct choice is D
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