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3 years ago

What is the answer to -4.3x + 12 + 15.1x = 33.6?

Mathematics

1 answer:

Mashutka [201]3 years ago

6 0

Answer:

10.8x +45.6

Step-by-step explanation:

am smart

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Consider w=sqrrt2/2(cos(225°) + isin(225°)) and z = 1(cos(60°) + isin(60°)). What is w+ z expressed in rectangular form?

SVETLANKA909090 [29]

Answer:

Option (3)

Step-by-step explanation:

w = $\frac{\sqrt{2}}{2}[\text{cos}(225) + i\text{sin}(225)]$

Since, cos(225) = cos(180 + 45)

= -cos(45) [Since, cos(180 + θ) = -cosθ]

= - $\frac{\sqrt{2}}{2}$

sin(225) = sin(180 + 45)

= -sin(45)

= - $\frac{\sqrt{2}}{2}$

Therefore, w = $\frac{\sqrt{2}}{2}[-\frac{\sqrt{2}}{2}+i(-\frac{\sqrt{2}}{2})]$

= $-\frac{2}{4}(1+i)$

= $-\frac{1}{2}(1+i)$

z = 1[cos(60) + i(sin(60)]

= $[\frac{1}{2}+i(\frac{\sqrt{3}}{2})$

= $\frac{1}{2}(1+i\sqrt{3})$

Now (w + z) = $-\frac{1}{2}(1+i)+\frac{1}{2}(1+i\sqrt{3})$

= $-\frac{1}{2}-\frac{i}{2}+\frac{1}{2}+i\frac{\sqrt{3}}{2}$

= $\frac{(i\sqrt{3}-i)}{2}$

= $\frac{(\sqrt{3}-1)i}{2}$

Therefore, Option (3) will be the correct option.

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2 years ago

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Pls solve ty if u do!! :)

andrey2020 [161]

Answer:

at least 30

Step-by-step explanation:

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3 years ago

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Anyone know how to do this

GrogVix [38]

Answer:

c or a

Step-by-step explanation:

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2 years ago

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Calculate the current in a circuit whose electromotive force is 100 volts and resistance is 5 Ohms. Use the formula i = e/r.

morpeh [17]

I=20 amps.
By the way, did you know that this is Ohm's Law?

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3 years ago

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I am doing my homework and am completely stumped on this one... help please?

DENIUS [597]

<h2>Question:</h2>

Describe the symmetry of the figure. Identify lines of symmetry, if any. Find the angle and the order of any rotational symmetry.

<h2>Answer:</h2>

<em>line symmetry and rotational symmetry; 90°; order 4 </em>

Hope it helps

-------☆ﾟ.･｡ﾟᵴɒƙυᴚᴀ_ƨȶäᴎ❀

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2 years ago