Let dn denote the number of ways to cover the squares of a 2-by-n board using plain dominos. then it is easy to see that d1 = 1, d2= 2, and d3 = 3. compute a few more values of dn and guess an expression for the value of dn and use induction to prove you are right.

2

step-by-step explanation:

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information

you first to choose the points and then move from then as the slope you have

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d