Answer:
120°
Step-by-step explanation:
Recall:
The sum of interior angles if a parallelogram equals 360;
The sum of the angles can be defined as :
(x + 2x + x + 2x) = 360
6x = 360
x = 360/6
x = 60°
The angle BCD = 2x
Hence, angle BCD = 2(60°) = 120°
Step-by-step explanation:
Factor by grouping.
f(x) = x³ + 3x² − 5x − 4
f(x) = x³ + 3x² − 4x − x − 4
f(x) = x (x² + 3x − 4) − (x + 4)
f(x) = x (x − 1) (x + 4) − (x + 4)
f(x) = (x² − x) (x + 4) − (x + 4)
f(x) = (x² − x − 1) (x + 4)
Answer: there is no answer involving real numbers
Step-by-step explanation:
Answer:
a(n) = 3*3^(n-1).
Step-by-step explanation:
The first term of this sequence is 3. The next one is 3 times 3, or 9; the next is 3 times 9, or 27; and so on. So the common ratio is 3.
The formula for the nth term is thus a(n) = 3*3^(n-1).
