Express each of the following statements in symbols, using <, >, ?, or ?.a is positive.
A. a ? 0
B. a < 0
C. a ? 0
D. a > 0
Answer: D
Mathematics
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Establish the identity.sin
= 
(cos x + sin x)
What will be an ideal response?
Mathematics
Solve.An arch in the shape of the upper half of an ellipse is used to support a bridge spanning a creek 40 feet wide. The center of the arch is 10 feet above the center of the creek. What is the height of the arch at a distance 12 feet from the center of the creek?
A. 3 feet B. 8 feet C. 0.8 foot D. 10 feet
Mathematics
Find the vertex and axis of symmetry of the graph of the function.f(x) = -x2 + 8x + 1
A. (4, 17) ; x = 4 B. (8, 1) ; x = 8 C. (-4, -47) ; x = -4 D. (-4, -15) ; x = -4
Mathematics
Solve the equation.- 2x + 
= 
x + 
A. - 
B. 
C. 
D. 
Mathematics