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allochka39001 [22]
3 years ago
12

This is complex numbers​

Mathematics
1 answer:
CaHeK987 [17]3 years ago
8 0

the answer to this problem is i = 5 that is the answer

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A publishing industry report predicts that magazine subscriptions will drop
Mrrafil [7]

Answer:

24,393 subscribers

Step-by-step explanation:

This is <u>exponential decay</u> problem. The formula for exponential decay is:

F=P(1-r)^t

Where

F is the future value (what we are looking for, in 7 years)

P is the present amount (that is 51,000)

r is the rate of decrease per year (r = 10% = 10/100 = 0.1)

t is the time, in years (t = 7)

Now substituting, we get:

F=P(1-r)^t\\F=51,000(1-0.1)^7\\F=51,000(0.9)^7\\F=24,393.14

Rounding to nearest whole number,

Number of subscribers after 7 years = 24,393 subscribers

8 0
3 years ago
It is 7 kilometers from kerrys house to the mall. About what is that distance in miles?
GenaCL600 [577]

Answer:

\huge\boxed{\approx 4.4 \  \text{miles}}

Step-by-step explanation:

In order to convert kilometers to miles, we can use a formula, assuming m is miles and k is kilometers.

m = \frac{k}{1.609}.

Since we know the kilometer reading (7), we can divide this by 1.609 to get our total miles.

7 \div 1.609 \approx 4.4

Hope this helped!

3 0
3 years ago
Pierre Martina is comparing the cost of credit to the cash price of an item. If Pierre makes a down payment of $70 and pays $34
Amanda [17]

Answer:

$191

Step-by-step explanation:

Find how much she will be paying over the 24 months:

34(24)

= 816

Add the down payment to this:

816 + 70

= 886

Find the difference between this and 695:

886 - 695

= 191

So, the difference will be $191 more

8 0
3 years ago
On a plane there are 2 seats on the left side and 3 seats on the right side. All together there are 150 seats in all.
Ahat [919]
There is no way to know unless you were given a row number or number of seats in a row
3 0
3 years ago
Last year, 210 middle school students
Anit [1.1K]

Answer:

8%

Step-by-step explanation:

let,

this year population of students (pt)= 195

last year population of students (p)= 210

time(t)= 1 year

Population Change( R)= ?

we have,

pt= p( 1 - R/100)^t

195 = 210 ( 1 - R/100)^1

0.92= 1 - R/100

0.92-1= R/100

- 0.08 = - R/100

R= 0.08×100

R= 8%

5 0
3 years ago
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