compute each sum below. if applicable, write your answer as a fraction.
5+5(-2)+5+(-2)^2++5(-2)^7=
9
∑ (1/4i)=
i=1

First equation is -425

Second equation is 11.25

Step-by-step explanation:

First equation we can write as

computing

When i=0 ->

When i=1 ->

...

When i=7 ->

then replacing each term we have

For the second equation we'll have 9 terms, solving in a similar fashion

When i=1 ->

When i=2 ->

When i=3 ->

...

When i=9 ->

So we have 0.25 + 0.50 + 0.75 + 1.00 + 1.25 + 1.50+ 1.75 +2.00 +2.25

12 miles per hour is faster because 12 miles in one hour equals to 63,360 feet. If you multiply the amount of minutes in an hour to 15 you get to 54,000 feet so 15 feet per second in one hour would equal 54,000 feet making 12 miles per hour faster