Toilet Flushing: 64% of Americans use their foot to flush the toilet in public restrooms. A simple random sample of 740 Americans woman aged 18-24 years are surveyed. Use the normal approximation to the binomial to approximate the probability that a. Approximate the probability that exactly 490 flush with their foot.

b. Approximate the probability that no more than 490 flush with their foot.

c. Approximate the probability that between 480 and 500 flush with their foot, inclusive.

first one is a: renaming a fraction. second one is c: de-c

step-by-step explanation:

my explanation is that these were the answers on edg : )

17

step-by-step explanation:

51/3=17

thus 17 is your answer.

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

x= 3^y

step-by-step explanation: