795 x 6.52= 51.834
51.834 x 3= 155.502
Final answer 155.50
Okay, you will need to use the law of cosines for this problem.
The Law of Cosines states (in this case): a^2 = b^2 + c^2 - 2 * b * c * cos A, where "a" is the side opposite angle A (7 inches), and b and c are the other two sides.
Plug the numbers in and you get: 7^2 = 5^2 + 9^2 - 2 * 5 * 9 * cos A, or:
49 = 25 + 81 - 90 * cos A.
Subtract (25 + 81) from both sides to get:
-57 = -90 * cos A.
Divide by -90 on both sides:
cos A = 19/30
To find A, you do the inverse trigonometric function to get:
cos^-1 of (19/30) = A.
I don't have a calculator that can do this right now, but if you plug the left side of the above equation into it (make sure it is in degrees, not radians), you should get A.
Answer is -5
-6y + 2 = -2(4y + 4) factor first
-6y + 2 = -8y - 8 put y on one side of the equation
2y + 2 = -8 isolate y
2y = -10
y = -10/2
y = 5
Answer: The product of this equation, expressed as a mixed number is -3 17/20
Asked to find h(4). Hence, we don not need f(x) and g(x).
Substitute x=4 in h(x).
so, h(4) = 7*(4)^2 - 8 => 112 - 8 => 104
hope it helps.
