Answer:
D
Step-by-step explanation:
A sin 2.355/2.355 =0.01745240644 cos -2.355/2.355 root square
=180 so untrue not-1
B. sin =0.01745240644 cos = 0 so untrue not 1.
C sin = 0.01745240644 cos = 180 so untrue not 1
D = - 2.355/2.355= 0.01745240644 cos = 0.01745240644 = -1 so true.
As if we divide 1 into -1 = 1
When we divide 0.01745240644 / 0.01745240644 = will also = 1
The answer is -1 as inverse.
Answer:

Step-by-step explanation:
Let
x----> that month's sales
y----> October earnings
we know that

-----> equation A
-----> equation B
Equate equation A and equation B and solve for x




Answer:
100
Step-by-step explanation:
Ratio is a fraction, so ratio of boys to girls would be written as [let boys be "b" and girls be "g"]:

Also, there are 250 more girls than boys, so we can write:
g = 250 + b
Lets substitute this into "g" of the ratio we wrote and cross mulitply and solve for b:

The number of boys = 100
So,

1. Graph each inequality separately.
2. Choose a test point to determine which side of the line needs to be shaded.
3. The solution to the system will be the area where the shadings from each inequality overlap one another (purple area)
As for the system of inequalities we say it's unbounded.