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Vlad1618 [11]
2 years ago
13

Ignore the answer selected

Mathematics
2 answers:
Masteriza [31]2 years ago
6 0

Answer:

Option B is correct.

Step-by-step explanation:

=6(cos270+isin270)\\\\=6(0-i)\\\\=6(-i)\\\\=-6i

stich3 [128]2 years ago
6 0

\sf - 6i

The modulus r, of a pure imaginary number bi, b<0, equals |b| and its argument θ equals \frac{3\pi}{2}

\sf \: r = 6 \\  \sf \theta =  \frac{3\pi}{2}

Substitute the given values into the formula r(cos(θ)+i×sin(θ))

\sf6( \cos( \frac{3\pi}{2} )  + i \times  \sin( \frac{3\pi}{2} ) )

Since, The value of 3π/2 is 270°.. Put it in the equation

\boxed{ \tt6( \cos270  + i \times  \sin270) }

<em>Thus, Option B is the correct choice!!~</em>

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Please help I don’t get it
lidiya [134]

Answer:

4.718592

Step-by-step explanation:

To get to -14.4 from 18 you multiply 18 x 0.8

Repeat that until you get to the 7th term

18 (1st)

18 x 0.8 = -14.4 (2nd)

-14.4 x 0.8 = 11.52 (3rd)

11.52 x 0.8 = 9.216 (4th)

9.216 x 0.8 = 7.3728 (5th)

7.3728 x 0.8 = 5.89824 (6th)

5.89824 x 0.8 = 4.718592 (7th)

3 0
3 years ago
A waterslide is rented at $500 per day plus a charge per hour of use. The bounce house was used for 5 hours one day, and the tot
Mazyrski [523]

Answer: 500+5x=800

Step-by-step explanation:

Given: The rent of waterslide per day  = $500

Let x be the a charge per hour of use.

The number of hours bounce house was used  = 5 hours

Since, the total charge was $800.

Therefore, the equation can be used to find the charge x, in dollars, per hour of use is given by :-

Fixed charge+5 times x=Total charge

\Rightarrow500+5x=800

4 0
3 years ago
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3 0
3 years ago
suppose y varies directly with x, an dy = 10 when x =3. what direct variation equations relates x and y?
Ratling [72]

The direct variation equation relates x and y is y = \frac{10}{3} x

Step-by-step explanation:

Direct variation is when one variable is equal to a constant times another variable

If y varies directly with x, then

  • y ∝ x
  • y = k x is the equation of variation
  • k is the constant of variation

∵ y varies directly with x

∵ y ∝ x

∴ y = k x

∵ y = 10 when x = 3

- Substitute these values in the equation above to find k

∴ 10 = k(3)

∴ 10 = 3 k

- Divide both sides by 3

∴ k = \frac{10}{3}

∴ The equation of variation is y = \frac{10}{3} x

The direct variation equation relates x and y is y = \frac{10}{3} x

Learn more:

You can learn more about variation in brainly.com/question/10708697

#LearnwithBrainly

8 0
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