Answer:

Step-by-step explanation:
Convert the mixed numbers to improper fractions, then find the LCD and combine and getting you -2 7/12
<u>Hopes this helps</u>
Step-by-step explanation:
hopefully this helps:)
Instantaneous velocity represents the velocity at a particular point.
The instantaneous velocity at t = 3 is 7.7 ft/s
The table is given as:
![\left[\begin{array}{cccccccc}t&0&1&2&3&4&5&6\\s&0&4.9&10.7&23.2&50.4&109.4&237.8\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcccccccc%7Dt%260%261%262%263%264%265%266%5C%5Cs%260%264.9%2610.7%2623.2%2650.4%26109.4%26237.8%5Cend%7Barray%7D%5Cright%5D)
To calculate the instantaneous velocity at 
We get the distance at 
At
, the distance (s) is:

So, the instantaneous velocity (v) is:

This gives

Divide 23.2 by 3

Hence, the instantaneous velocity at t = 3 is 7.7 ft/s
See attachment for the required graph
Read more about instantaneous velocity at:
brainly.com/question/13190516
Answer:
x=27
Step-by-step explanation:
180-2x-40+180-3x+180-x-50+180-4x = 360
360-2x-40-3x+360-x-50-4x= 360
360-10x-90= 0
10x= 270
x= 27
The answer is 180°
Angles between straight lines are 180°
Hope this helps :))