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Afina-wow [57]
3 years ago
6

Which expression is equal to (2 – 5i) – (3 + 4i)? O1 – 9i 0-1 – 9i 05 - 0 -1- i

Mathematics
1 answer:
Roman55 [17]3 years ago
5 0

Answer:

-1-9i (the second option)

Step-by-step explanation:

(2 – 5i) – (3 + 4i)

=2-5i-3-4i

= -1-9i

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A tube of toothpaste weight about 1 pound bens mother bought five tubes how many ounces did the tubes of toothpaste weight in al
Varvara68 [4.7K]
80 oz 
One pound is 16 ounces. If there is 5 pounds then you just multiply 16 by 5 and get 80 ounces. 

6 0
3 years ago
DO NOT COMMENT IF YOU AREN’T GOING TO HELP. Create a real-life situation and create a system and show how it might be modeled al
olya-2409 [2.1K]

Answer:

in today's market supply and demand fluctuates. for example the recent demand for apple air pods. They came out in 2016 but were not very popular,But with the sudden increase in demand the amount sold has increased by 75 percent from 2017 to 2018. this could be graphed using the equation. f(x)=1.75x+16

with each unit on the graph equaling 1 million on the y axis

and the amount of years along the x but you must start at 16 along the x axis

in 2017 there was 16 million air pods sold and in December 2018 28 million were sold during that year



Step-by-step explanation:


8 0
3 years ago
You can model the population of a certain city between 1955-2000 by the radical function
OverLord2011 [107]

<em><u>Complete Question:</u></em>

You can model the population of a certain city between 1955-2000 by the radical function

P(x) = 55,000 sqrt x-1945

Using this model, in which year was the population of that city 275,000?

<em><u>Answer:</u></em>

In 1970 population of that city is 275,000

<em><u>Solution:</u></em>

Given that,

<em><u>You can model the population of a certain city between 1955-2000 by the radical function :</u></em>

P(x) = 55000\sqrt{x - 1945}

To find: year in which was the population of that city 275,000

Therefore,

x = ?

P(x) = 275000

Thus we get,

275000 = 55000\sqrt{x - 1945}\\\\Divide\ both\ sides\ by\ 55000\\\\\frac{275000}{55000} = \sqrt{x-1945}\\\\5 = \sqrt{x - 1945}\\\\Take\ square\ on\ both\ sides\\\\25 = x - 1945\\\\x = 1945 + 25\\\\x = 1970

Thus, in 1970 population of that city is 275,000

4 0
3 years ago
What is the answer to this 5/7 of x is 1/7
zmey [24]

Answer:

1 / 5

Step-by-step explanation:

5 / 7 of x is 1 / 7

( 5 / 7 ) * x = 1 / 7

x = ( 1 / 7 ) * ( 7 / 5 )

= ( 1 * 7 ) / ( 7 * 5 )

x = 1 / 5

6 0
2 years ago
If x,y are in inverse proportion then complete the following table x= 42 y=-15 , x=30 y=-----
horrorfan [7]

Answer:

when x=30, y = -21

Step-by-step explanation:

x = k/y

x = 42 y = -15

x = k/y

42 = k/-15

Cross product

42 * -15 = k

-630 = k

k = - 630

Find y when x=30

x = k/y

30 = -630/y

Cross product

30 * y = - 630

30y = - 630

y = - 630/30

y = -21

when x=30, y = -21

7 0
2 years ago
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