Answer is. B. -65. It’s like adding with positive numbers but your doing it with negative
150 is 100 %
x is 28 %
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150 : x = 100 : 28
100 x = 150 * 28
100 x = 4,200
x = 4,200 : 100
x = 42
150 + 42 = 192
Answer:
The new amount is 192.
I’m pretty sure the answer is C
The coefficient of the x-term is -3. Add the square of half of that.
.. (-3/2)² = 9/4 . . . . . . the number you need to add.
x² -3x +9/4 = (x -3/2)²
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If the x² term has a coefficient other than 1, you need to factor that out first and deal with the remaining binomial. For example,
.. 2x² -6x = 2(x² -3x)
For this you would need to add 9/4 inside parentheses to get
.. 2(x² -3x +9/4) = 2(x -3/2)²
Of course, to keep the original value, you would need to subtract 2*(9/4) outside parentheses.
.. 2x² -6x = 2(x -3/2)² -9/2
2(4x-6) + 2(3x+4) is the expression used to represent the perimeter
