Answer:
answer is b
Step-by-step explanation:
55. B
56. F
57. B
58. 2 x 7 = 14 for the steps and top, 2 x 3 = 6 for the back, 2 x 4 = 8 for the bottom, ( ( 3 x 2 ) + 3 ) x 2 = 18 for the two sides.
Altogether, the surface area is:
= 14 + 6 + 8 + 18 = 46 units²
59. I
60. D
![\frac{4}{9}^{( -\frac{1}{2} )} = \frac{1}{ \sqrt[]{ \frac{4}{9} } } = \frac{1}{ (\frac{2}{3} )} = \frac{3}{2} = 1.5](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B9%7D%5E%7B%28%20-%5Cfrac%7B1%7D%7B2%7D%20%29%7D%20%20%3D%20%20%20%20%5Cfrac%7B1%7D%7B%20%5Csqrt%5B%5D%7B%20%5Cfrac%7B4%7D%7B9%7D%20%7D%20%7D%20%20%3D%20%20%5Cfrac%7B1%7D%7B%20%28%5Cfrac%7B2%7D%7B3%7D%20%29%7D%20%20%3D%20%20%5Cfrac%7B3%7D%7B2%7D%20%20%3D%201.5)