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3 years ago

What is the sum of the expression (8 − 4i) + (−2 + 7i)?

Mathematics

1 answer:

Lemur [1.5K]3 years ago

5 0

Answer:

Your answer is: $6+3i$

Simplify by combining the real and imaginary parts of each expression.

Step-by-step explanation:

Hope this helped : )

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If it's 8:23 pm now... What time would it be in 45 min? ( I want to see what everyone comes up with)

andreyandreev [35.5K]

8:23, after 45 minutes is technically 8: 68

however, the hour ends at 60 minutes, so your true answer is 9:08 pm

hope this helps

6 0

3 years ago

Please help me!! no links<3

vlabodo [156]

A is correct.
A sum is addition
Square is represented by small 2

Answer: A

5 0

3 years ago

What is the variable x in 40+10x=5x-30

konstantin123 [22]

40 + 10x = 5x - 30

To begin isolating x, subtract 40 from both sides.

40 + 10x - 40 = 5x - 30 - 40

10x = 5x - 70

Subtract 5x from both sides.

10x - 5x= 5x - 70 - 5x

5x = -70

Finally, divide both sides by 5.

5x/5 = -70/5

x = -14

Answer:

x = -14

4 0

3 years ago

A bowl contains 4 red marbles and 3 yellow marbles. Tim randomly draws 3 red marbles from the bowl. He replaces each marble afte

mr Goodwill [35]

So,

The probability of drawing a yellow marble is $\frac{3}{7}$ .
Since he replaces the marble after it is drawn out, the probability of drawing another yellow is the same: $\frac{3}{7}$ .

The probability of drawing a red marble is $\frac{4}{7}$ .

In order to get the probability of drawing 2 yellow marbles and 1 red marble, given that each marble is replaced after it is drawn out, we must multiply the fractions together.

$( \frac{3}{7} )( \frac{3}{7} )( \frac{4}{7} ) = \frac{36}{343}$

Because the order of the marbles doesn't matter, we will multiply the probability by 3.
$3( \frac{36}{343} ) = \frac{108}{343}$

6 0

3 years ago

Makes de following combinet operations

Gnoma [55]

Hinges maybe idk lml?

5 0

3 years ago