21. Consider the geometric sequence-8, 16, -32, ... Which of the following statements are true?
a. The common ratio is 2.
b. The 5th term of the sequence is -128.
C.
The 7th term is 4 times the 5th term.
d. The 8th term is 1024.
e. The 10th term is greater than the 9th term.

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Aparking garage charges $1.12 for the first hour and 0.50 for each additional hour. what is the maximum length of time tom can park in the garage if we wishes to play no more than $5.62