All categories

2 years ago

Please help me answer all parts of the question in the photo.

Mathematics

1 answer:

yarga [219]2 years ago

3 0

$i=\sqrt{-1}\\i^2=\sqrt{-1}*\sqrt{-1}=-1\\i^3=\sqrt{-1}*\sqrt{-1}*\sqrt{-1}=-i\\i^4=\sqrt{-1}*\sqrt{-1}*\sqrt{-1}*\sqrt{-1}=1$

You might be interested in

Write the equation in vertex form of the parabola with the vertex (-4,-4) that goes through the point (-2,-16)

Brrunno [24]

Answer:

$- 3(x + 4) {}^{2} - 4$

Step-by-step explanation:

Vertex form is

$a(x - h) {}^{2} + k = f(x)$

We know that h and k are both -4. Let x be -2 and y be -16.

$a( - 2 + 4) {}^{2} - 4 = - 16$

$a(2) {}^{2} - 4 = - 16$

$4a - 4 = - 16$

$4a = - 12$

$a = - 3$

So the equation in vertex form is

$- 3(x + 4) {}^{2} - 4$

5 0

2 years ago

7. Construct a pie chart to depict the data given below:

marta [7]

aku gak tau apa Jawaban nya Jadi aku Minta maaf

8 0

2 years ago

What percentage of videos on the streaming site are between 39 and 189 seconds?

PolarNik [594]

Answer:

B) 15.85%

Step-by-step explanation:

normalcdf(minimum,maximum,μ,σ)

normalcdf(39,189,264,75)

≈0.1573

≈15.73%

Therefore, the closest answer is B

4 0

2 years ago

Calculate the perimeter of this shape.

aleksandrvk [35]

Step-by-step explanation:

Hello there!

Again, just double the given sides.

20+38=58 cm

8 0

2 years ago

Judy Garland Electronics operate on a net-profile rate of 20% on its printer cables. If the markup is $8.95 and the overhead is

Ratling [72]

Answer:

The selling price is $79.53 .

Step-by-step explanation:

Formula

$Profit\ percentage = \frac{Profit\times 100}{Cost\ price}$

Let us assume that the cost price be x .

As given

Judy Garland Electronics operate on a net-profile rate of 20% on its printer cables.

If the markup is $8.95 and the overhead is $4.31 .

Selling price = Cost price + Markup price + Overhead price

Putting all the values in the above

= x + 8.95 + 4.31

= x + 13.26

Profit = Selling price - Cost price

= x + 13.26 - x

= 13.26

Putting all the values in the above

$20 = \frac{13.26\times 100}{x}$

$x = \frac{13.26\times 100}{20}$

$x = \frac{1326\times 100}{20\times 100}$

$x = \frac{1326}{20}$

x = $ 66.3

Thus

Selling price = x + 13.26

= 66.3 + 13.26

= $ 79.53

Therefore the selling price is $79.53 .

6 0

2 years ago