Which of the following sentences describes a situation in which opposite quantities combine to make 0? Check all that apply. (A) A person is walking forward at a rate of 5 ft per second on a moving walkway that is moving forward at a rate of 3 ft per second.

(B) A 150-lb man doing pull-ups exerts a 160lb upward force on the bar to raise himself.

(C) The top of an office building in Kuwait City, Kuwait, is 413 meters above sea level. The Dead Sea between Israel and Jordan is 413 meters below sea level.

(D) An heiress inherits $500,000 and pays $500,000 in income tax this year.

the answers are C and D

Step-by-step explanation: I did the test

mean, 40.6

step-by-step explanation:

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 ☺