Answer:
The answer is 729
Step-by-step explanation:
to get the next term, the sequence multiples the previous number by -3
1 * -3 = -3
-3 * -3 = 9
and so on.
To get the 7th term:
-27 * -3 = 81 (5th term)
81 * -3 = -243 (6th)
-243 * -3 = 729 (7th)
Answer:
no solution
Step-by-step explanation:
It is -27 because a negative number times a positive number is negative. In this case it is -9 times (3) which is -27.
Cos(x)=0.5
x=pi/3
since cos is postive in the fourth quadrant and first quadrant
x=pi/3+2*pi*k where k is an integer
fourth quadrant
x=(-pi/3)+2*pi*k where k is an integer
the first 3 values of K in the first quadrant are
pi/3,7*pi/3,13*pi/3
the first three postive values for the fourth quadrant are
5*pi/3,11*pi/3,19*pi/3
so the smallest three are
pi/3,5*pi/3,7*pi/3,11*pi/3
total kilometers = kilometers by train + kilometers by car
265 = 80 + kilometers by car
kilometers = rate * time = 90* h
265 = 80 + 90*h
