All categories

2 years ago

(-12+48i)+(15+21i) in simplifying complex numbers

1 answer:

swat322 years ago

5 0

So if the "i" becomes confusing, just think of it as x
so it would become (-12+48x) +(15+21x)
then you would split up the terms by constants and coefficients
-12+15 +48x+21x
3+69x and then you substitute back for i
3+69i

You might be interested in

the price of a gallon of unleaded gas was $2.86 yesterday. today, the price fell to $2.79. find the percent decrease. round answ

soldier1979 [14.2K]

So.. 2.86 - 2.79 is the amount in decrease or 0.07

so.. if we take 2.86 as the 100%, how much is 0.07 of that in percentage?

well $\bf \begin{array}{ccllll}
amount&\%\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
2.86&100\\
0.07&x
\end{array}\implies \cfrac{2.86}{0.07}=\cfrac{100}{x}$

solve for "x"

3 0

2 years ago

4. Harry is going to send some flowers to his wife. Summerfield Florist charges $1 per rose, plus

k0ka [10]

The number of roses purchased will be; 12 roses

The total cost of the bouquet is; $51

Let number of roses be x

For Summerfield florists;

At $1 per rose and $39 for the vase, cost is;

C = x + 39

For grayson's flowers;

At $3 per rose and $15 for the vase,total cost is;

C = 3x + 15

We are told when he orders a certain number of roses, the cost will be the same with each flower shop.

Thus;

x + 39 = 3x + 15

3x - x = 39 - 15

2x = 24

x = 24/2

x = 12

Total cost is;

C = 12 + 39

C = $51

Read more about cost functions at; brainly.com/question/19300938

7 0

2 years ago

Please help i’ll give brainliest if you help with a correct answer and explain if you want tysm

marshall27 [118]

Answer:

4:3

16:12

To find an equivalent ratio, multiply or divide both quantities by the same number. It is the same process as finding equivalent fractions

Step-by-step explanation:

4 0

2 years ago

The average of the degree

maria [59]

The answer is C.
Octagon is 135
And decagon is 144
So 144-135=11

8 0

2 years ago

Find two numbers whose sum is 10 for which the sum of their squares is a maximum

lukranit [14]

I think 5 is the answer not sure though

4 0

2 years ago