To get more accurate results, and to measure the speed in words against time and see what is the speed every minute in a reliable form.
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Answer:
4
Step-by-step explanation:
Think of it this way. You have 2 sets of 2.
I I (This represents two)
I I (This represents the other two)
When you combine these, you get:
I I I I
If you count the tally marks, your answer is 4.
The answer is -3 because 9x1=9 subtract 9 from both sides then divide by seven and you are left with -3
Answer: D, Corresponding Angles