A"wheat cent" is a one-cent coin ($0.01) produced in the united states between 1909 and 1956. the name comes from a picture of wheat on the back of the coin. assume that 1 out of every 350 pennies in circulation is a wheat cent and that wheat cents are uniformly distributed among all pennies. cassandra the coin collector goes to the bank and withdraws 4 dollars' worth of pennies (in other words, 400 pennies). (a) write an expression for the exact probability that cassandra finds at least 2 wheat cents among her 400 pennies. (b) use either the poisson or normal approximation, whichever is appropriate, to estimate the probability that cassandra finds at least 2 wheat cents among her 400 pennies.

correct

step-by-step explanation:

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form

the answer is

d.

5.3066 m2

step-by-step explanation: