Solve.Twice the difference of 4 and a number is equal to 10. Find the number.
A. 1
B. 2
C. -1
D. -2
Answer: C
Mathematics
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Solve the proportion for x.
= 
A. x = 
B. x = 
C. x = 
D. x = 
Mathematics
Solve the problem.A particular substance decays in such a way that it loses half its weight each day. How much of the substance is left after 10 days if it starts out at 128 grams?
A. 
g
B. 4 g
C. 
g
D. 8 g
Mathematics
Solve the problem.On a map of the Thunderbird Country Club golf course, 1.5 inches represent 30 yards. How long is the 6th hole if the map shows 14 inches?
A. 3.2 yd B. 280 yd C. 420 yd D. 630 yd
Mathematics
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