Divide and write the answer in simplest form.180 ÷ (-6)
A. -40
B. 30
C. -30
D. - 
Answer: C
Mathematics
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Write the vector v in terms of i and j whose magnitude 
and direction angle ? are given.
= 7, ? = 225°
A. v = - 
i - 
j
B. v = - 
i - 
j
C. v = - 
i - 
j
D. v = 
i + 
j
Mathematics
Find the value of a? so that the slope of the line joining points P(a, 6) and Q(4, 4) is equal to 4. ?
A. ?
B. ?
C. ?
D. ?12
E. ?
Mathematics
Solve the problem. Round to the nearest tenth of a percent, if necessary.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 30 questions correct. What was the percent of increase?
A. 5% B. 80% C. 16.7% D. 20%
Mathematics
Multiply.-8 ? (-8)
A. -64 B. 72 C. 64 D. -72
Mathematics