1 ft = 12 in
6 in = 6/12 = 0.5 ft
9 in = 9/12 = 0.75 ft
D = M/V ⇒ M = DV
V = 0.5 * 0.5 * 0.75 = 0.1875 cubic foot
M = 41.7 * 0.1875 ≈ 7.8 pounds
Answer: B.
Answer:
Quadrant 4
Step-by-step explanation:
-9x(5 - 2x) Distribute/multiply 9x into (5 - 2x)
(-9x)5 - (-9x)2x
-45x - (-18x²) 2 negative signs cancel each other out and become +
-45x + 18x² Your answer is A ( the first option)
Area of wooden support is 36 square inches
<em><u>Solution:</u></em>
Given that, carpenter cut out a small trapezoid as a wooden support for the front step
<em><u>The area of trapezoid is given as:</u></em>
![area = \frac{a+b}{2} \times h](https://tex.z-dn.net/?f=area%20%3D%20%5Cfrac%7Ba%2Bb%7D%7B2%7D%20%5Ctimes%20h)
Where, "h" is the height
"a" and 'b" are the length of base
Here given that,
Height = h = 4 inches
a = 6 inches
b = 12 inches
Substituting the values we get,
![area = \frac{6+12}{2} \times 4\\\\area = 18 \times 2\\\\area = 36](https://tex.z-dn.net/?f=area%20%3D%20%5Cfrac%7B6%2B12%7D%7B2%7D%20%5Ctimes%204%5C%5C%5C%5Carea%20%3D%2018%20%5Ctimes%202%5C%5C%5C%5Carea%20%3D%2036)
Thus area of wooden support is 36 square inches
I think it is 128 but not 100%