Write the vector v in the form ai + bj, given its magnitude 
and the angle ? it makes with the positive x-axis.
= 11, ? = 180°
A. v = -11i - 11j
B. v = 11j
C. v = -11i
D. v = -11j
Answer: C
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Solve for part in the problem. Round to the nearest hundredth, if necessary.130% of 383 cartons
A. 4979 cartons B. 49,790 cartons C. 497.9 cartons D. 49.79 cartons
Solve the problem.As a radioactive sample disintegrates, the "parent" atoms are converted into "daughter" atoms. The number of daughter atoms D(t) that have been formed by a particular time t is given by 
where D(t) is the number of daughters, Po is the initial number of parent atoms, k is the decay rate constant in units of s-1, and t is in seconds. Find an expression for the rate of change of D with respect to time.
A. D'(t) = kPoe-kt B. D'(t) = -kPoe-kt C. D'(t) = kPoe-kt - 1 D. D'(t) = Po + Poe-kt
Find the matrix product, if possible.
A. 
B. 
C. 
D. Does not exist
Select the lesser of the two given numbers.-19, -5
A. -5 B. -19