Mathematics, 20.12.2019 19:31, bombbomb2157

Can someone me do 8 divided by 5.5? ?

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First you put 8 on the inside of a house and 5.5 on the outside. Then you take the 5.5 and see how many times it can go in 8 with out going over, in this case its once. So take 5.5 and subtract it under the 8. Since you used up the whole number, you have to put a decimal now, so put a decimal on the right side of the 1 on top of the house. Then, add a 0 next to the 8 and put it next to the answer of 8-5.5, which is 2.5, and now 25, the zero moving the number to the left once. Now you find out how many times 5.5 goes into 25, which is 4, adding that next to the decimal on top of the house. Now again, subtract 22, which is 4 x 5.5, from 25. Then add a zero, making 3, now 30.Now find how many times 5.5 goes into that, and it is 5. This 4 and 5 pattern will go on forever, so over the 45 in your answer 1.45, put a line. Like this __
1.45

answered: Guest

25 inches - 0.694 yards

answered: Guest

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 ☺

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