Find z1z2. Write your answer in standard polar form with the argument in radians.z1 = 7(cos 34° + i sin 34°), z2 = 4(cos 8° + i sin 8°)
A. 28(cos 26° + i sin 26°)
B. 28(cos 42° + i sin 42°)
C. 11(cos 272° + i sin 272°)
D. 11(cos 42° + i sin 42°)
Answer: B
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Solve the problem.An invoice received from Wharf Seafood Supply is dated Jan 1. The list price of the goods is $3531, with allowed series discounts of 20/10/10. If the cash terms are 4/15 ROG, and the goods were received Jan 15, find the amount to pay in full on Jan 28.
A. $1942.05 B. $2288.09 C. $3531 D. $2196.57
Solve the problem.Find the average rate of change.
Minutes Cellular Phone is Used
A. $1.33 per min B. $-0.08 per min C. $-12.00 per min D. $0.38 per min
Any sound from one focus of an ellipse reflects off the ellipse directly back to the other focus. This property explains whispering galleries such as Statuary Hall in Washington, D.C. The whispering gallery shown in the illustration below has the shape of a semi-ellipse. Find the distance sound travels as it leaves focus F and returns to focus F'.
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Please enter your answer as a number without the units, rounded to the nearest tenth.
Fill in the blank(s) with the appropriate word(s).
For the function provided, find all values of x for which f(x) satisfies the indicated condition. Graph the solution on a number line.f(x) = x2 + 7x, f(x) ? -12
A. 
B. 
C. 
D. 