Find the focus and directrix of the parabola.x2 = -8y
A. (0, -2); y = -2
B. (-2, 0); y = 2
C. (0, -2); y = 2
D. (0, -2); x = 2
Answer: C
Mathematics
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Calculate. State the answer as a whole-number quotient and remainder.7790 ÷ 38
A. quotient 206; remainder 0 B. quotient 205; remainder 0 C. quotient 205; remainder 29 D. quotient 206; remainder 28
Mathematics
Use a radical to write f(x).f(x) = x1/7
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics
Use Identities to find the exact value.cos (-75°)
A. -
- 
B. 
C. 
- 
D. 
Mathematics
Solve. If necessary, round to the nearest tenth.If a flagpole 9 feet tall casts a shadow that is 12 feet long, find the length of the shadow cast by an antenna which is 21 feet tall.
A. 5.1 ft B. 24 ft C. 28 ft D. 15.8 ft
Mathematics