Answer:
What is the answer choices
The complete question in the attached figure
we know that
When we know <span>two sides and the included angle the formula for calculate the area is
</span>Area=(1/2)*a*b*sin C
in this problem
let
a=20
b=12
C=68°
Area=(1/2)*20*12*sin 68°------> Area=111.26 units²-----> Area=111.3 units²
the answer is111.3 units²
Answer: 
Step-by-step explanation:
For this exercise you need to use the Inverse Trigonometric function arccosine, which is defined as the inverse function of the cosine.
Then, to find an angle α, this is:

In this case, you can identify that:

Then, substituting values into
and evaluating, you get that the measure of the angle "B" to the nearest degree, is:

Answer:
C Both relation and function.
Step-by-step explanation:
This would pass the vertical line test so it is both a relation and a function
Answer:
x = 10, y = 0
Step-by-step explanation:
x + y = 10 ---> x = 10 - y
3x + 2y = 30
3 (10 - y) + 2y = 30
30 - 3y + 2y = 30
y = 0
x + 0 = 10
x = 10