I'll mark you brainliest for the right answer! 20 points

One way is to first find the measure of one external angle:-

Measure 1 ext angle = 360 / 10 = 36 degrees (Note the sum of the external angles of all polygons is 360  degrees)

So the internal angle = 180 - 36 = 144

So sum of the internal angles

= 10 * 144

= 1440  degrees (answer)

decagon

All sides are the same length (congruent) and all interior angles are the same size (congruent).

To find the measure of the angles, we know that the sum of all the angles is 1440 degrees (from above)...  And there are ten angles...

decagons

So, the measure of the angle of a regular decagon is 144 degrees.sum of exterior angles always=360°

for n-sided polygon,

sumo of exterior angles+sum of interior angles =180×n°

sum of interior angles=180n° -360°=180n°-180°×2=180(n-2)°

For decagon, n=10,

sum of its interior angles =180×10°–360°=1800°–360°= 1440°

so your answer is 1440°

step-by-step explanation:

i found the life tables for the year 2012. 

life table of males at age 30. probability of dying between ages x and x+1

total population:  

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:  

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old. 

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

                                          probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.