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son4ous [18]
3 years ago
13

PLEASEE HURRYY Which expression is equivalent to the complex number. 10+3i

Mathematics
2 answers:
Charra [1.4K]3 years ago
8 0

Answer

Im always right and the answer is 5.720

Step-by-step explanation:

Give me brainly

irga5000 [103]3 years ago
5 0

Answer:

(4+7i)-2i(2+3i) = 10+3i

Step-by-step explanation:

We need to find the expression that is equivalent to the complex number 10+3i.

Option 1. 2i(4-5i)+(1-7i)

=8i-10i²+1-7i

∵ i² = -1

=8i-10(-1)+1-7i

=8i+10+1-7i

=11+i (incorrect)

Option 2. (4+7i)-2i(2+3i)

=4+7i-4i-6i²

=4+7i-4i-6(-1)

=4+7i-4i+6

=10+3i (Correct)

Option 3. (-3+5i)-3i(4+5i)

= (-3+5i)-12i-15i²

= -3+5i-12i-15(-1)

= -3+5i-12i+15

=12-7i (incorrect)

Option 4. 3i(4+7i)+(11+2i)

= 12i+21i²+11+2i

=12i+21(-1)+11+2i

= 12i-21+11+2i

=14i-10 (incorrect)

Hence, the correct option is (B).

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4 years ago
At a pancake breakfast, children are served 1 pancake and adults are served 3 pancakes. Together, they can be served at most 191
andre [41]

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3 years ago
What is x^2-1-3(2x-2)(x-2)
gayaneshka [121]

Answer:

=−5x2+18x−13

Step-by-step explanation:

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5 0
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The Sugar Sweet Company is going to transport its sugar to market. It will cost $3500 to rent trucks, and it will cost an additi
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Rectangle has diagonal of 28 and forms a60 degree angle with the bases what are the side lengths
Anna71 [15]
Sine (28) = opposite / hypotenuse =
0.46947 = opposite / 28
opposite = 0.46947 * 28
<span><span><span>opposite side = 13.14516 </span> </span> </span>

cosine (28) = adjacent / hypotenuse =
0.88295 = adjacent / 28
adjacent = 28 * .88295
<span><span><span>adjacent side = 24.7226 </span>

Double Check

</span> </span> <span>13.14516^2 + 24.7226^2 = 28^2
</span>
<span> <span> <span> 172.7952314256  </span> </span> </span> + <span> <span> <span> 611.20695076 </span> </span> </span> = 784

<span> <span> <span> 784.0021821856 </span> </span> </span> = 784

Correct to 5 significant figures


7 0
3 years ago
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