Con que frecuencia se propaga una onda que realiza 20 oscilaciones en 13 minutos​

second mirror gathers light from a faraway object and reflects it to another mirror. - a.

i would say the answer is food.

hope this !

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles