M=-9
get this answer by simplifying both sides of the equation and isolating the variable.
The answer is NO open circle is not included in an inequality. The other person answered it incorrectly
4 kg because p (momentum) = m • v and p / v = m.
So 12 kg m/s divided by 3 m/s = 4 kg
When you set up 3 * (1/3), you're both multiplying and dividing by a 3. these two cancel out, and you're left with one. 3 *(1/3) is simply 1.
12 * (1/3), when you set it up, doesn't cancel out the same. multiply straight across the top (12 * 1), then divide by the bottom (3). 12/3 = 4, so 12*(1/3) is 4.
9 * (1/9) gives you the same result as the first one. the multiplied 9 and the divided 9 cancel out, and you're left with 1.
