In a 30°-60°-90° triangle, the hypotenuse has a length of 20 cm. Find the exact perimeter of this triangle.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find an equation of the line that contains the given point and is perpendicular to the given line.x + 5y = -5, (5, 5)
A. y = 5x - 30
B. y = - 
x + 4
C. y = 5x - 20
D. y = 
x + 4
Mathematics
Solve the equation.s - 9 = 13
A. -22 B. 22 C. -4 D. 4
Mathematics
Graph the quadratic equation. Identify the vertex and the intercept points with their coordinates.y = 2x2 + 2x - 1
A. vertex: 
;
x-intercepts: 
, 
;
y-intercept: (0, -1) 
B. vertex: 
;
x-intercepts: 
, 
;
y-intercept: (0, -1)
C. vertex: 
;
x-intercepts: 
, 
;
y-intercept: (0, -1)
D. vertex: 
;
x-intercepts: 
, 
;
y-intercept: (0, -1)
Mathematics
Find the midpoint of the line segment joining the points.
?
?
A. (
, -
, 
)
B. (
, 
, 
)
C. (
, 
, -
)
D. (
, 
, 
)
E. (
, 
, 
)
Mathematics