What is the number? : ) (well the rest of it ; -; )

See where the arrow is pointing at in each of the scales.

---In the first scale, the arrow is clearly on the 300, so you have 300 grams.

---Now look at the second scale. The arrow is clearly on the 40, so add 300g + 40g = 340 grams.

---The last scale's arrow is between the 2 and 3. There are 10 ticks between 2 and 3, so that means each tick represents 0.1.

The arrow is on the first tick, so it represents 0.1 grams. Add 2 and 0.1 = 2.1 grams.

Now add 340g + 2.1g = 342.1 grams.

The triple beam scale reads as 342.1 grams.

step-by-step explanation:

i am not sure sorry : c

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