Sherry is 31 years younger than her mom. the sum f their ages is 61. how old is sherry

Sherry age =  15 years.

Step-by-step explanation:

Given  : sherry is 31 years younger than her mom. The sum f their ages is 61.

To find : how old is sherry.

Solution : We have given sherry is 31 years younger than her mom.

Let the sherry mom age is = x

According to question ,

sherry is 31 years younger than her mom. =

Sherry age = x - 31 .

Sum of their age  is  61

x + x - 31 = 61

2x - 31 = 61.

On adding both sides by 31

2x = 61+ 31

2x = 92

On dividing both sides by 2

x = 46.

Mom age  = 46 .

Sherry age =  46 - 31  = 15.

Therefore, Sherry age =  15 years.

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.