If guy walks from his house to school and back, how far does he walk.

total distance = 1 miles

Step-by-step explanation:

According to the information given below from the picture, the distance from the guy's house to the school is given as 5/10 miles.

5/10 miles can still be reduced to the lowest fraction as 1/2 miles.

Since he works to and fro from his house to school and school to house, The distance he covered will be the sum of the distance from house to school and school to house .

Distance from house to school = 1/2 miles

Distance from school to house = 1/2 miles

The total distance he covered = 1/2 miles + 1/2 miles

total distance = 1 miles

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

maya’s expression will generate the wrong sum because she violated the commutative property.

step-by-step explanation: