Convert the polar number 2.75(cos315° + isin315°) to rectangular form.

What will be an ideal response?


1.9 – 1.9j

Mathematics

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A student can afford to spend up to $370 on a stereo system and some compact discs. If the stereo costs $155 and the discs are $9.50 each, find the greatest number of discs he can buy. 

A. 22 B. 20 C. 26 D. 25 E. 21

Mathematics

Evaluate the function at the given values of the variable.f(x) = 7x2 + 6x + 1a. f(-7)b. f(-9)

A. 2360, 3916 B. -139, -179 C. 302, 514 D. 4116, 6804

Mathematics

Solve the problem.An aircraft going from Atlanta to Savannah on a heading of 130° (from north) is travelling at a speed of 500 miles per hour. The wind is out of the north at a speed of 22 miles per hour. Find the actual speed and direction of the aircraft, rounded to the nearest whole number.

A. 697 miles per hour; 131° from north B. 486 miles per hour; 132° from north C. 493 miles per hour; 132° from north D. 514 miles per hour; 132° from north

Mathematics

Find the product.(x - 5)3

A. x3 - 15x2 + 35x - 125 B. x3 - 5x2 + 35x - 125 C. x3 - 15x2 + 75x - 125 D. x3 - 15x2 + 15x - 125

Mathematics