Use an appropriate identity to find the exact value of the expression.cos (-105°)
A. 
B. - 
C. 
D. 
Answer: D
Mathematics
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Find the value.Let f(x, y) = xy2 + 
. Find f(x6, 
).
A. x6 + x3 B. 2x4 C. x4 + x3 D. 2x3
Mathematics
Multiply.(1.57)(-7.0)
A. -5.43 B. 8.57 C. 10.99 D. -8.57
Mathematics
Solve the problem by solving a system of equations graphically.The sum of two numbers is 5 and their difference is 1. Find the numbers.
A. 5, 0 B. 3, 2 C. 4, 3 D. 4, 2
Mathematics
Solve the problem.Among 170 households surveyed, 44 have a video camera, 40 have a snapshot camera, 51 have binoculars, 9 have a video camera and a snapshot camera, 8 have a snapshot camera and binoculars, and 5 have all three products. What is the probability that a household will have a snapshot camera or binoculars? Express the answer as a fraction.
A. 
B. 
C. 
D. 
Mathematics