Express the given vector as a linear combination of the unit vectors i and j.
A. 5i + 5j
B. 3i + j
C. -5i + 5j
D. i + 3j
Answer: A
Mathematics
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Suppose that ? is in standard position and the given point is on the terminal side of ?. Give the exact value of the indicated trig function for ?.(15, 20); Find cos ?.
A. 
B. 
C. 
D. 
Mathematics
State whether the function is linear or quadratic.f(x) = 7
A. Linear B. Quadratic
Mathematics
Solve by completing the square to obtain exact solutions.x2 + 16x + 54 = 0
A. -8 ± 
B. 8 ± 3
,
C. 8 + 
D. -16 ± 3
Mathematics
Write the relationship as an equation or formula.Three times the sum of a number n and 4 is 6 times n.
A. 3n = 4 + 6n B. 3 + n + 4 = 6n C. 3(n + 4) = 6n D. 3n + 4 = 6n
Mathematics