Answer:
-24
Step-by-step explanation:
substitute by 2
2²-12×2+q=0
q=-24
The speed of a yacht traveling a distance of 1.357 km in 165 minutes is 0.5 km/h
<h3>What is Speed?</h3>
The speed of an object is the distance covered by the object in respect to time.
Mathematically:


- We know that 60 minutes = 1 hour
- 165 minutes = 2.75 hours

Speed = 0.5 km/hour
Learn more about calculating speed here:
brainly.com/question/4931057
Answer:
Range = 0.125
Step-by-step explanation:
The detailed steps is as shown in the attached file.
If you solve this problem using the substitution method then,
X = - 8
Y = - 4
Answer:52.0
Step-by-step explanation:you just add a decimal then a 0 because it is a whole number