Write the phrase as a mathematical expression. Use x as the variable.The sum of a number and 15
A. 15x
B. x + 15
C. 
D. x - 15
Answer: B
Mathematics
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Convert the Hindu-Arabic numeral to Chinese.4900
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A truck burns fuel at the rate (gallons per mile) of 
while traveling at x mph. If fuel costs 
per gallon, find the speed that minimizes fuel cost for a 200-mile trip.
A. 30.8 mph B. 47 mph C. 44.5 mph D. 40 mph
Mathematics
Use the following information to fill in the blank: 
105 mL = ___ tsp
A. 35 B. 21 C. 525 D. 315
Mathematics
If the null space of a 5 × 7 matrix is 3-dimensional, find Rank A, Dim Row A, and Dim Col A
A) Rank A = 4, Dim Row A = 3, Dim Col A = 3 B) Rank A = 4, Dim Row A = 4, Dim Col A = 4 C) Rank A = 2, Dim Row A = 2, Dim Col A = 2 D) Rank A = 4, Dim Row A = 4, Dim Col A = 3
Mathematics