E como seria a potenciação com um número negativo na base? Será que os
parênteses são importantes como nas
outras operações? Lembre-se que
podemos representar uma potenciação
com multiplicações.
62 = 6 x 6 = 36
(-6)2 = (-6) X (-6) = ?
43 = 4 x 4 x 4 = 64
(-4)3 = (-4) x (-4) (-4)= ?

How do i do this activity, is appreciated

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.

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb