Answer:
D. Relation only.
Step-by-step explanation:
This is a one-to-many relation ( because -2 maps on to -4 and -11) so it is a relation but NOT a function. A function is a one-one or many-to-one relation.
The two cars (a and b) will be 800 km apart after 10 hours.
<h3>What is the average speed of a car?</h3>
The average speed of a car is the total distance traveled by a car within a specific period of covering such distance.
From the given information:
- If the speed of car A (v_a) = 30 km/hr; and
- The speed of car B (v_b) = 50 km/hr
The distance between both cars will be the hours they will meet:
i.e.


30t + 50t = 800
80t = 800
t = 800/80 hrs
t = 10 hrs
Learn more about the average speed of a car here:
brainly.com/question/6504879
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The angles labeled 22, 1, and 2 are part of a triangle. 1 is a 90 degree angle.
So, 2 is 180-90-22=68 degrees.
3 is 180-68=112 degrees, since it forms a straight line if joined with angle 2.
4 is also 112 degrees since it is vertical with 3. .
5 is 180-112=68 because it makes a straight line with 4.
And so on
Answer:
-216
Step-by-step explanation:
6*9= 54
54* (-4) = -216