Factor completely.16 + 8x + x2
A. (x - 4)2
B. (x + 4)2
C. (x + 4)(x - 4)
D. Prime
Answer: B
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Find the probability.A calculator requires a keystroke assembly and a logic circuit. Assume that 85% of the keystroke assemblies and 78% of the logic circuits are satisfactory. Find the probability that a finished calculator will be satisfactory. Assume that defects in keystroke assemblies are independent of defects in logic circuits.
A. 0.6630 B. 0.8200 C. 0.7225 D. 0.6084
Solve the problem.A rumor is spread at an elementary school with 1200 students according to the model 
where N is the number of students who have heard the rumor and d is the number of days that have elapsed since the rumor began. How many students will have heard the rumor after 5 days?
Fill in the blank(s) with the appropriate word(s).
A certain small country has $20 billion in paper currency in circulation, and each day $70 million comes into the country's banks. The government decides to introduce new currency by having the banks replace old bills with new ones whenever old currency comes into the banks. Let x = x (t) denote the amount of new currency in circulation at time t with x (0)=0. Formulate and solve a mathematical model in the form of an initial-value problem that represents the ”flow” of the new currency into circulation (in billions per day).
What will be an ideal response?
Solve.
+ y2 = 36 
A. (-
, 5), (
, 5), (0, -6)
B. (-
, 5), (
, 5), (0, 6)
C. (
, 5), (0, 6)
D. (
, 5), (0, -6)