Calculate.-0.4 ? (-10.7)
A. 11.1
B. 4.28
C. -11.1
D. -10.3
Answer: B
Mathematics
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Find the vertices and foci of the ellipse.16x2 + 49y2 = 784
A. Vertices: (±4, 0); Foci: (±
, 0)
B. Vertices: (±7, 0); Foci: (±
, 0)
C. Vertices: (0, ±7); Foci (0, ±
)
D. Vertices: (0, ±4); Foci (0, ±
)
Mathematics
Solve the equation.
+ 9 = 
A. - 
B. 
C. 
D. - 
Mathematics
Find the perimeter (or circumference) and area of the figure.Give the exact value and an approximation using ? ? 3.14.
A. circumference = 15? ? 47.10 cm area = 225? ? 94.20 sq cm B. circumference = 15? ? 47.10 cm area = 56.25? ? 176.63 sq cm C. circumference = 7.5? ? 47.10 cm area = 56.25? ? 176.63 sq cm D. circumference = 7.5? ? 47.10 cm area = 225? ? 706.50 sq cm
Mathematics
Simplify.
? 
? 
A. 
B. 
C. 
D. 
Mathematics