Someone help please, ill give brainliest for the correct answer, this is due in a few mins :(

A and B

Step-by-step explanation:

Terms are the sets of numbers, excluding the signs. So 15x^4 is one term, so is 12, or 8x^3, or 5x.

A has exactly 4 terms because 15x^4 is a term, and 9x^2, 5x, and 12 are all terms.

B has exactly 2 terms because 12y^3, 8y^2, 4y, and 20 are terms, and those are 4 terms.

C does not, however. 18 is a term, and so is 4^3 (which is technically 64). However, -5n and 3n are not two terms, but just one. This is because they can be combined, and are similar terms. Thus, C's expression is really just 18-2n+4^3. 18 is a term, -2n is a term, and 4^3 is a term. C only has 3 terms.

D does not have 4 terms, just 2, 4x^3 and 12x.

a and b

Step-by-step explanation:

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

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