As a general rule, the normal distribution is used to approximate the sampling distribution of the sample proportion only if:a. the population proportion Π is close to 0.50.b. the underlying population is normal. c. the sample size n is greater than or equal to 30.d. nΠ and n(1-Π) are both greater than or equal to 5.

true

step-by-step explanation:

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.