How far from the base of a building must a 13-ft ladder be placed so that it reaches 5 ft up the wall?
?
A. 18 ft
B. 12 ft
C. 13 ft
D. 8 ft
E. 5 ft
Answer: B
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Identify all of the symmetries in the following figure.
A. It has reflection symmetries; it can be reflected across a vertical line through its center, a horizontal line through its center, or either of its diagonals, and its appearance remains the same. It also has rotation symmetries; it can be rotated through 90°, 180°, or 270°, and its appearance remains the same. B. It has rotation symmetries; it can be rotated through 90°, 180°, or 270°, and its appearance remains the same. C. It has reflection symmetries; it can be reflected across a vertical line through its center, a horizontal line through its center, or either of its diagonals, and its appearance remains the same. D. None of these.
Simplify the expression. [-4m + (-10m - 6)] - [(10m + (1 - 6m)) + 4m]
A. -14m + 7 B. -14m - 5 C. -22m - 7 D. -6m - 5
Solve the problem for the given information.Find the equation of a line passing through the origin so that the sine of the angle between the line in 
and the positive 
is 
.
A. y = 
x
B. y = 
x
C. y = 
x
D. y = x
Multiply.70 ? 5
A. 355 B. 345 C. 75 D. 350