Add or subtract.
+ 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (3t cos t - 3 sin t)j + (3t sin t + 3 cos t)k
A. T = (-3 sin t)j + (3 cos t)k
B. T = (3 cos t)j - (3 sin t)k
C. T = (-sin t)j + (cos t)k
D. T = - 
(sin t)j + 
(cos t)k
Mathematics
Solve.The number of employees that work at a company has increased by 35% over the past year. This year there are 763 more employees with the company than last year. How many employees were there last year?
A. 2180 employees B. 21.8 employees C. 1417 employees D. 26,705 employees
Mathematics
Solve the problem.Use geometry to find the actual area under the graph of f(x) = 2x + 3 from 0 to 2.
A. 11 B. 10 C. 9 D. 8
Mathematics
Write the fraction as a decimal.
A. 5 B. 0.05 C. 2 D. 0.5
Mathematics