Answer:
the answer will be the first one.
Step-by-step explanation:
Answer:
50 miles per hour
Step-by-step explanation:
Here,
Time= 8 hours
Distance=400 miles
The speed is calculated by dividing the distance by time.
So,
Average Speed=Distance/Time
= 400/5
=50 miles per hour
Answer:
Explained in detail below
Step-by-step explanation:
4/28 = 1/7 = 1:7
17 Is not the right answer whats the right answer
<u>Answer:</u>
a = 8.1
<u>Step-by-step explanation:</u>
Use the cosine rule:

Substituting the values:

⇒ 
⇒ 