As per the problem
Erika drove 280 miles in 5.5 hours.
She averaged 40 miles per hour driving through towns and cities .
She averaged 55 miles per hour driving on the highway.
Let Erika drive on high for "t" hours on highway.
Then driving time other than highway![=(5.5-t) \ hours\\](https://tex.z-dn.net/?f=%20%3D%285.5-t%29%20%5C%20hours%5C%5C%20)
As we know that ![\text{Distance=Speed*Time}\\ \\\text{Hence from the given data we can setup the equation as below}\\\\](https://tex.z-dn.net/?f=%20%5Ctext%7BDistance%3DSpeed%2ATime%7D%5C%5C%20%5C%5C%5Ctext%7BHence%20from%20the%20given%20data%20we%20can%20setup%20the%20equation%20as%20below%7D%5C%5C%5C%5C%20%20)
![40(5.5-t)+55(t)=280\\\\\text{Simplify we get}\\\\ 220-40t+55t=280\\\\\text{Take the like terms together and simplify we get}\\\\55t-40t=280-220\\\\15t=60\\\\t=4\\](https://tex.z-dn.net/?f=%2040%285.5-t%29%2B55%28t%29%3D280%5C%5C%5C%5C%5Ctext%7BSimplify%20we%20get%7D%5C%5C%5C%5C%20220-40t%2B55t%3D280%5C%5C%5C%5C%5Ctext%7BTake%20the%20like%20terms%20together%20and%20simplify%20we%20get%7D%5C%5C%5C%5C55t-40t%3D280-220%5C%5C%5C%5C15t%3D60%5C%5C%5C%5Ct%3D4%5C%5C%20)
Hence for 4 hours Erika drove on the highway.
Answer:
.3636363636
Step-by-step explanation:
Because 2/3 x6/11 equals the answer
The sum of the 3 inside angles need to equal 180.
You know 2 of the angles: 90 and 39
The third angle is 180 - 90 - 39 = 51 degrees.
Side a is given as 24
Side B = tan(39) = b/24 = 19.43 (round as needed)
Side C = cos(39) = 24/c = 30.88 (round as needed)
3 centimetres = 1 yard
Answer 1:
30 cm
Answer 2:
45 cm
Answer 3:
24 cm
Answer 4:
12 cm
Pls make my answer as brainliest)))