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3 years ago

How many complex zeros does the function x^8+3x^2-4

Mathematics

1 answer:

butalik [34]3 years ago

4 0

Answer:

Step-by-step explanation:

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What is 8,731 divided by 2

lukranit [14]

Answer:

4365.5 or 4365 1/2

Step-by-step explanation:

When you divide 8731 by 2 you will get a decimal.

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Now you will have to answer with the for that best fits your problem.

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3 years ago

A plane flew 720 mi with a steady 30 mi/h tailwind. The pilot then returned to the starting point, flying against that same wind

NNADVOKAT [17]

Answer:

Plane's speed is 150 miles/hour

Step-by-step explanation:

Let the plane's airspeed be x

Speed of wind is 30 miles/hour

When a plane flew with the wind , Speed = (x+30)

So, the speed plain with wind on going = (x+30)

Since we are given that on returning plane fly against the wind .

So,When a plane flew against the wind , Speed = (x-30)

So, the speed plain against wind on returning = (x-30)

Distance = 720 miles .

$Time = \frac{Distance}{Speed}$

So, time on going $=\frac{720}{(x+30)}$

Time on returning $=\frac{720}{(x-30)}$

Now we are given that the total time for the whole trip (going + returning) = 10 hours.

So, $\frac{720}{(x+30)}+\frac{720}{(x-30)}=10$

$\frac{720x-21600+720x+21600}{(x+30)(x-30)}=10$

$720x-21600+720x+21600=10(x+30)(x-30)$

$720x+720x=10(x+30)(x-30)$

$1440x=10(x^2 -[30]^2)$

$144x=x^2 -900$

$x^2-144x -900=0$

$x^2-150x+6x -900=0$

$x(x-150)+6(x -150)=0$

$(x-150)(x+6)=0$

$x= 150,x= -6$

So, the plane's speed is 150 miles/hour

4 0

3 years ago

NEED HELP ON EOG ASAP The width of the rectangular school playground is half the length. * Let W represent the width of the play

Colt1911 [192]

Well if the width is half of the length it would look something like W = L/2.

For example, if the length was 6 then the width would be 3, because it would be 6/2 = 3.

7 0

2 years ago