Answer:
the perimeter is 87
Step-by-step explanation:
Answer:
area is length * width
12* 10 = 120cm
the answer is 120cm
Step-by-step explanation:
Answer:4/52=1/13
Step-by-step explanation:
The deck has 52 cards and contains 4 aces. When you draw a card, the probability of drawing an ace is 4/52=1/13
Answer:
C. 4(cos(300°) +i·sin(300°))
Step-by-step explanation:
The magnitude will be ...
magnitude = √(2^2 +(-2√3)^2) = √(4+12) = 4
The negative imaginary part puts the angle in the 4th quadrant. The answer choice with a magnitude of 4 and a 4th-quadrant angle is ...
4(cos(300°) +i·sin(300°))
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If you want to figure the angle, it will be ...
angle = arctan(Im()/Re()) = arctan(-2√3/2) = arctan(-√3) = -60°
The corresponding 4th-quadrant angle is 300°.
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<em>Comment on answer choices</em>
Answer choice A is <em>another representation of the same number</em>. Typically, we want the magnitude to be positive in polar form, so that answer can be avoided on those grounds.