Solve the number problem by finding the value of the unknown number.The sum of 4 and four times a number is 
.
A. 
B. 0
C. 
D. 
Answer: C
Mathematics
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Find the sum of the series.
A. 
B. 7
C. 14
D. 
Mathematics
Integrate the given expression.
dx
A. 
x9 + C
B. 
x9 + C
C. 
x9 + C
D. 
x9 + C
Mathematics
Write the vector v in the form ai + bj, given its magnitude 
and the angle ? it makes with the positive x-axis.
= 13, ? = 90°
A. v = 13i - 13j) B. v = 13i C. v = 13i + 13j D. v = 13j
Mathematics
Solve the problem.A rectangular piece of cardboard measuring 13 inches by 50 inches is to be made into a box with an open top by cutting equal-size squares from each corner and folding up the sides. Let x represent the length of a side of each such square. What is the maximum possible volume of the box? If necessary, round to the nearest hundredth.
A. 46,569.59 in.3 B. 5796.01 in.3 C. 924.01 in.3 D. 5357.08 in.3
Mathematics