Answer:
The value of cos(2x) = 7/25
Hence, option C is true.
Step-by-step explanation:
Using the trigonometric identity
cos 2x = 1 - 2sin²x
Given
so substituting the values
cos 2x = 1 - 2sin²x
= 1 - 2 (-3/5)²
= 1 - 2 (9/25)
= 1 - 18/25
= 7/25
Therefore,
The value of cos(2x) = 7/25
Hence, option C is true.
I believe it is the transitive property
Answer:
3x-3
Step-by-step explanation:
Answer: 2x-2
Step-by-step explanation:
Answer:
2nd graph
Step-by-step explanation:
You have the next restriction:
x*40 + y*75 <= 7500
where
x: number of boxes that weigh 40
y: number of boxes that weigh 75
Every point below the line fulfill the equation, for example, x = 1 and y = 1 is in the shaded region because 40 + 75 is less than 7500. The difference between dashed and solid line is that in the first case the line is not included in the solution and in the second it is. In this case the line is solid because the restriction has a less or equal sign (<=), for example, point x = 0 and y = 100 is less or equal to 7500 and fulfill the equation.