Potencias con exponetes enteros. La edad de una micro bacteria J es de 1/3^-3 dias. a)¿Cuál es la edad total de tres micro bacterias? b)Una micro bacteria M vive la tercera parte de la vida de la micro-bacteria J. ¿Cuántos días vive la micro bacteria M?

a) Age of the three microbacteria J=0.00099 days

b) Age of the microbacteria M=0.00011 days

Step-by-step explanation:

a)We first calculate the age of a single microbacterium J, as follows:

Age of microbacteria J=(1/3)^-3=0.00033 days

The total age of the three microbacteria J is equal to:

Age of the three microbacteria J=3x0.00033=0.00099 days

b) If a microbacteria M lives the third part of what the microbacterium J lives, only the age of the microbacteria J must be divided by three, thus:

Age of microbacteria M=0.00033/3=0.00011 days

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,