The answer is the third one.
The way I think through these problems is that where you multiply (-7x), you use addition, and where you use addition (-4), you multiply.
The answers added together will equal the second number, -7, and multiplied will give you the third, -4.
What you had chosen as the answer was close. But 7.53+-0.53 equals positive 7, not negative. However they do round to -4 when multiplied.
The correct answer, -7.53 and 0.53, do equal -7 when added together and equal -4 when multiplied.
7 is the answer. hope this helps!
Answer:
152
Step-by-step explanation:
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Answer:
Answers below
Step-by-step explanation:
1. Order pair method
[(x2-x1) , (y2-y1)] = b-a = [(7--9) , (3-9)] = (16,-6)
2. Magnitude
|v| = 
v = |17.088|
