This problem relies on the definition of a Binomial random variable as a sum of n Bernoulli random variables. Let Xi be a Bernoulli random variable with p=0.1, for 1≤i≤400. The random variable X1+⋯+X400 will likely be around , give or take about . (Enter the expected value of the random variable, and its standard error.) What is the probability that X1+⋯+X400 will equal 25?

the correct is answer is a 9-sided polygon!

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of

42.4 6th grade students prefer hip hop

step-by-step explanation:

40 percent of 106 = 42.4

third choice down

step-by-step explanation:

the first inequality is based on the number of adults and campers, and the second inequality is based on the cost of feeding both the adult and the camper.

we know that there is room for 525 people max.   it's ok to have less than 525, but it's not ok to have more than 525, so the inequality is less than or equal to.   the number combination of adults (x) and campers (y) cannot exceed this 525 max.   therefore:

x + y ≤ 525

now we talk about cost.   it costs $9 to feed one adult, so depending upon the number of adults you have (x) depends upon how much it will cost to feed that number of adults.   same with the campers, who cost $5 to feed.   the adults can be represented by 9x and the campers can be represented by 5y.   since the budget cannot exceed 1,200, the second inequality is:

9x + 5y ≤ 1200