Answer:
D
Step-by-step explanation:
First of, let's make a table for y = cos(x)
(x , y): (0 , 1) (π/2 , 0) (π , -1) (3π/2 , 0) (2π , 1)
Now, making a table for y = 2cos(x) is simple. We just have to multiply all the y-values from the previous table by 2.
(x , y): (0 , 2) (π/2 , 0) (π , -2) (3π/2 , 0) (2π , 2)
Graphing these coordinates, we find that the answer is D.
9. x + (y - 3 - 4x + 2( 3x - (-y - 1) + 2y) - 3x)
= x + (y - 3 - 4x + 2 (3x + y - 1) + 2y - 3x)
= x + (y - 3 - 4x + 6x + 2y - 2 + 2y - 3x)
= (x - 4x + 6x - 3x) + (y + 2y + 2y) - (3+2)
= 0 + 5y - 5
= 5y - 5 (or simplified as 5(y-1)
10. 6 + (-a -3(b + 6(a - b)+4a) - 2b)
= 6 + (-a - 3(b + 6a - 6b + 4a) -2b)
= 6 + (-a - 3b + 18a - 18b + 12a - 2b)
= 6 + (-a + 18a + 12a) + (-3b - 18b - 2b)
= 6 + 29a - 23b
Lmk if it's wrong, I'll try to edit it.
Answer:
Step-by-step explanation:
To find the length of the diagonal, use Pythagorean theorem.
(diagonal)² = (length)² +(width)²
= 12² + 5²
= 144+ 25
= 169
diagonal = √ 169 = 13 units
Sum of lengths of two diagonals = 13 + 13 = 26 units
In rectangle, diagonals are of equal length.
Answer:
Step-by-step explanation:
465.23
Answer:
Step-by-step explanation:
- (2/3)(cx + 1/2) - 1/4 = 5/2
- (2/3)cx + 1/3 - 1/4 = 5/2
- (2/3)cx + 1/12 = 5/2 Multiply all terms by 12
- 8cx + 1 = 30
- 8cx = 29
- x = 29 / (8c)