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skelet666 [1.2K]
3 years ago
10

I dont understand how to solve a+5 ​

Mathematics
1 answer:
Ket [755]3 years ago
4 0

Answer:

5a

Not sure if this is correct !

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WILL MARK BRAINLIEST IF CORRECT❤️❤️<br> Simplify the expression -5+i/2i<br> Step by step
zhenek [66]

Answer:

For complex numbers,

a + bi and a - bi

they have the interesting property that if you add them you get the real number 2a

and if you multiply them , because of the difference of square pattern, you get a^2 - b^2 i^2

But since i^2 = -1, we end up with a real number as a product.

e.g. 6 - 5i and 6 + 5i are conjugates of each other

sum = 6-5i + 6+5i = 12

product = 36 - 25i^2

= 36 -(-25) = 61

Your question is even easier, since the denominator is a monomial instead of a binomial, so we just have to multiply by i/i

Also I believe, according to the answer, that you have a typo, and you meant

(-5+i)/(2i)

= (-5+i)/(2i) *i/i

= (-5i + i^2)/2i^2)

= (-5i +i^2)/-2

= (-5i - 1)/-2

= (1 + 5i)/2 or they way they have it: 1/2 + 5i/2

5 0
2 years ago
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Max is on a diet.he want to have a snack.he cam have a snack if it less than 220kcal
Ludmilka [50]
500/20 = 25kcal per piece
8 * 25 = 200kcal.....yes, he is able to have 8 pieces
4 0
3 years ago
Can someone help me with this, im not really good at math and i dont understand this :(​
cluponka [151]

Answer:

y = 2x + 4

Step-by-step explanation:

First find 2 points on the line to determine slope.

(0, 4) and (2, 8)

Slope = \frac{8-4}{2-0}=2

y = 2x + b

b = y - intercept

b = 4

y = 2x + 4

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Solve the equation 23(9+x)=−5(4−x).
NemiM [27]

Answer:

x= -\frac{277}{18}

Step-by-step explanation:

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2 years ago
What is the perimeter of trapezoid ABCD?
vitfil [10]
I think B but don't take my word!!!
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