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3 years ago

Describe the number and type of roots for the polynomial. (how many real and complex?)

1 answer:

7 0

This is a cubic equation so it will have a total of three roots.
there is only one change of sign so the equation will have one positive real root.
The other 2 roots will be negative and might be real or complex

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I have to factor this expression 2x+2

Lunna [17]

The factor of this expression would be 2(x+1)

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3 years ago

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10 meters wide with a surface area of 80 square meters.

Vlada [557]

Answer:

Step-by-step explanation:

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3 years ago

For each example below, determine whether a posit tive, negative or no cause and effect relationship exists

alexira [117]

This is perhaps the most odd math question I have ever come across. Anyhow -

#1 - Positive, because smoking increases the chance of having lung cancer. (though technically there is not a linear relationship between the two as people do in fact receive lung cancer even when having not smoked)

#2 - No relationship. (Though one could argue a student may text more when given more free time as a consequence of having spent less time at school, but this is wholly subjective and unable to be substantiated by logic.)

#3 - Negative, due to the mass of the tootsie pop decreasing with each lick.

Of course, I am assuming when you say "positive" and "negative" you are speaking in terms of numbers or addition and subtraction rather than "positive" or "negative" socially.

6 0

3 years ago

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Help!!!!!!!!!!!!

labwork [276]

Answer:

None of the Above

Step-by-step explanation:

As it is given that

cosФ= 3/2

and Ф lies in quadrant 4

Now in quadrant 4 we know that by the rules of trigonometry that

cos Ф is positive in 4th quadrant also in 4th quadrant

and sinФ is negative in 4th quadrant

also we know that by simple rules of trigonometry in a right angled triangle

cos Ф= $\frac{Base}{Hypotenuse}$ = $\frac{3}{2}$

now from the law of trigonometry

cos²Ф+sin²Ф=1

From this we derive the value of sinФ

solving the equation

sin²Ф=1-cos²Ф

Putting in the values of cos Ф

sin²Ф=1- $(\frac{3}{2})^{2}$

sin²Ф=1- $(\frac{9}{4})$

solving the fraction

sin²Ф= $(\frac{4-9}{4})$

sin²Ф= $(\frac{-5}{4})$

so taking square root of both sides

$\sqrt{sin^{2}\alpha}=\sqrt{\frac{-5}{4} }$

here

$\alpha$ =Ф

so it becomes

sin Ф= $\frac{\sqrt{-5} }{2}$

as we know that in imaginary numbers

$\sqrt{-1}$ = ι

so the given becomes

sin Ф= $\frac{{-5ι} }{2}$

Which is the value of sin Ф

And in the given values we can see that it is none of the values

Also seeing the question we can see that the question is absurd because

cos Ф= base / hypotenuse

in our question we can see that base =3 and hypotenuse = 2

but in real geometry this is the rule that hypotenuse can never be smaller then base either it is equal to base or greater then base

the formula for finding value of finding hypotenuse is

hypotenuse ² = base ² + perp ²

so this formula shows that if perp is 0 then hypotenuse will be equal to base

in other cases it would be greater then base

5 0

3 years ago

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I really need help here, will u help me plz??

kvasek [131]

A and C are the only ones who could work...

Because 16+16=32 2+2=4 so 4 counselors to 32 campers

16+16+16=48 and 2+2+2=6 so 48 campers to 6 counselors could also work.

5 0

3 years ago