The distance in kilometers in scientific notation 
<h3>Scale factors</h3>
Scale factors are values or constants multiplied with a variable
If Alvin and Simon raced a distance of
kilometers and they need to race 7 times that distance in a kilometer, the distance traveled will be:
- Distance travelled =

- Distance travelled =

Hence the distance in kilometers in scientific notation 
Learn more on distance here: brainly.com/question/23848540
Answer:
3/4+3/8
=9/8
9/8-5/8
=4/8 or 1/2 left
Step-by-step explanation:
Answer:
f=131
Step-by-step explanation:
<h2>
Answer:</h2>
3/5 divided by 1/2 equals 6/5 or 1 and 1/5!
(My method- Keep 3/5, change the division sign to a multiplication sign, and flip 1/2 to 2/1. Multiply strait across and you get 6/5! 5 can go into 1 one time and that leaves 1/5! So your answer is 1 and 1/5
<h2>
Step-by-step explanation:</h2>
If she wants an average of 73 for 3 tests,
she needs a total of 73 x 3 = 219
Total of the first 2 tests = 77 + 75 = 152
Scores needed for her 3rd test = 219 - 152 = 67.
Answer: She needs a score of 67 marks.