3 years ago

The area of a rectangle is 40 square inches. The

1 answer:

7 0

5 inches because. If you know your times tables you will easily know that 5x8=40 or you could have divided 40 by 8 to get 5.

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vampirchik [111]

Step-by-step explanation:

1/2 the fourth answer :)

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weqwewe [10]

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kodGreya [7K]

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Papessa [141]

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3 years ago

Sunny_sXe [5.5K]

Answer:

-3

Step-by-step explanation:

$3 cis(180^\circ)$ means $3(\cos(180^\circ)+i \sin(180^\circ))$

What is the $x$ -coordinate value that corresponds to $\theta=180^\circ$ . That value is -1.

What is the $y$ -coordinate value that corresponds to $\theta=180^\circ$ . That value is 0.

So this implies $\cos(180^\circ)=-1 \text{ and } \sin(180^\circ)=0$ .

$3 cis(180^\circ)$

$3(\cos(180^\circ)+i \sin(180^\circ))$

$3(-1+i (0))$

$3(-1+0)$

$3(-1)$

$-3$

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3 years ago