Answer:
see below
Step-by-step explanation:
An x-intercept is a place where the graph crosses the x-axis. This graph crosses the x-axis at -2, -1, 1, and 2. The coordinates of these points are ...
- (-2, 0)
- (-1, 0)
- (1, 0)
- (2, 0)
Of these, only one is listed among your answer choices: (-1, 0).
Answer:
see explanation
Step-by-step explanation:
Consider the left side
A + 
A - 2cos²Asin²A ← is the expansion of
= (cos²A - sin²A)²
Substitute sin²A = 1 - cos²A
= (cos²A - (1 - cos²A) )²
= (cos²A - 1 + cos²A)²
= (2cos²A - 1 )²
= right side , then proven
Answer: I believe it should be 16 but rounding to the nearest tenth would make it 20.
Step-by-step explanation:
i'm sorry if i'm incorrect
Answer:
this is absolutely false.
Answer:
sum of twice a number and three is 21
2x + 3 = 21
x = 9
