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3 years ago

Anyone know how to do parts of complex numbers

Mathematics

1 answer:

Agata [3.3K]3 years ago

6 0

Answer:

Re = 6.2

Im = 37

Step-by-step explanation:

Re is the Real Axis which is the real number in the equation (6.2).

Im is the Imaginary Axis which is the imaginary number in the equation (37)

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The revenue, in dollars, of a company that makes toy cars can be modeled by the polynomial 3x2 + 4x – 60. The cost, in dollars,

Tems11 [23]

For this case we have the following quadratic functions:

Revenue: $3x ^ 2 + 4x - 60$

Cost: $3x ^ 2 - x + 200$

Then, we observe that the profit is given by the following mathematical relationship:

$Profit = Revenue - Cost$

Substituting values we have:

$Profit = (3x ^ 2 + 4x - 60) - (3x ^ 2 - x + 200)$

Making the corresponding calculations we have:

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Answer:

An expression that represents the profit is:

$Profit = 5x - 260$

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3 years ago

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DaniilM [7]

Answer:

The trestle meets ground level at 0.875 units and 9.125 units

Step-by-step explanation:

Poorly formatted question.

The given equation is:

$y = -x^2 + 10x - 8$

Required

The point where the trestle gets to the ground level

To do this, we set $y = 0$

So, we have:

$-x^2 + 10x - 8 = 0$

Multiply through by -1

$x^2 -10x + 8 = 0$

Solve using quadratic formula:

$x= \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

Where:

$a = 1; b =-10; c = 8$

So, we have:

$x= \frac{-(-10) \± \sqrt{(-10)^2 - 4*1*8}}{2*1}$

$x= \frac{-(-10) \± \sqrt{68}}{2*1}$

$x= \frac{-(-10) \± 8.25}{2}$

$x= \frac{10 \± 8.25}{2}$

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$x= 5 \± 4.125$

Split

$x= 5 + 4.125\ or\ x= 5 - 4.125$

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3 years ago

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dybincka [34]

Answer:

50kg

Step-by-step explanation:

K = Keith B = Beth H = Henry

K = 20 + B

H = 2B - 30

K = H

20 + B = 2B - 30

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3 years ago

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If a number ends in zero, then it is divisible by five

kramer

Answer:

Yes

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