En la reserva natural de Norongoro beben cebras y ñus, las cebras se encuentran en grupos de 5 y los ñus forman grupos de 8 hay el mismo numero de grupos de un animal que de otro, . Si hay entre 95 y 105 animales de ambas especies ¿Cuál es el numero total de cebras y de ñus? A.96 B.100
C.104 D. 106

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west