Erin ended a hike at an elevation of 3,000 feet above sea level. she had started at an elevation of 1,000 feet above sea level. what was erin's change in elevation

2,000

Step-by-step explanation:

3000-1000= 2000

ANSWER:

The change in the elevation of Erin was 2000 feet.

SOLUTION:

Given that , Erin ended a hike at an elevation of 3,000 feet above the sea level.

She had started the hike at an elevation of 1,000 feet above sea level.  

We need to find what was Erin's change in elevation.

Change in elevation is nothing but the difference between the initial elevation and final elevation.

change in elevation of erin = final elevation of erin – initial elevation of erin.

Given that the final elevation is 3000 and initial elevation is 1000.Hence substituting the values in above formula we get,

Change in elevation of erin = 3000 – 1000

Change in elevation of erin = 2000 feet.

Hence, the change in the elevation of erin was 2000 feet.

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.

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 ☺