(9 * 2) + 1 = 18 + 1 = 19/2 is it's fractional notation/mixed number.
A.) (fg)(x) = (2x^2 - 1)(<span>-5x) = -10x^3 + 5x
</span>b.) (g of f)(x) = g(f(x)) = -5(<span>2x^2 - 1) = -10x^2 + 5</span>
Let:
P - perimeter
l - length
w - width
We know:
P = 118 m
l = 2w - 7
<h3>Rectangle perimeter's formula: P = 2l + 2w</h3>
We replace the length with 2w - 7.
P = 2×(2w - 7) + 2w
118 = 4w - 14 + 2w
118 = 6w - 14
6w = 118 + 14
6w = 132
w = 22 meters
Answer:
8x + 16
Step-by-step explanation:
(f - g)(x) = f(x) - g(x)
g(x) = -(x+4)(x+4)
= -(x² + 4x + 4x + 16)
= -(x² + 8x + 16)
= -x² - 8x - 16
1) Subtract the two functions.
= (-x²) - (-x² - 8x - 16)
= -x² + x² + 8x + 16
= 8x + 16
Answer:
x + 9
Step-by-step explanation: