Answer:
B. tan (-180°) = 0
Step-by-step explanation:
Tangent is the ratio of opposite to adjacent to an angle
From the unit circle; the opposite to our angle -180° is 0
The adjacent along the x-axis is 1
Therefore;
Tan (-180°) = 0/1
= 0
Therefore; Tan (-180°) is 0
Answer:
A. 0.7
Explanation:
B is irrational
I have no idea was c and d so that leads to A because it’s terminated
-4x + 6y = 12
x + 2y = -10
First solve for x in the second equation
x + 2y = -10
x = -10 - 2y
Now we have a value for x so we can substitute it into the other equation
-4 (-10 - 2y) + 6y = 12
Now solve for y
40 + 8y + 6y = 12
40 + 14y = 12
14y = -28
y = -2
Now we have a value for y that we can plug into one of the original equations so we can solve for x
x + 2y = -10
x + 2(-2) = -10
x - 4 = -10
x = -6
Your solution set is
(-6, -2)
We clearly get the maximum at x=-3, in which case y=0
Answer: 0, last choice
