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3 years ago

A third degree polynomial equation with rational coefficients that has roots -4 and 2+i

1 answer:

8 0

If one of the roots is 2+i, another must be 2-i. We can express this polynomial as (x+4)(x-2-i)(x-2+i). This expands to $x^3-11x+20$ .

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Answer:the awnser is A i beleive not 100% sure

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3 years ago

A 2 level 5 factor experiment is being conducted to optimize the reliability of an electronic control module. In a full factoria

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Answer:

Step-by-step explanation:

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2 years ago

If 45% of a number is 99 and 35% of the same number is 77, find 80% of that number.

Dovator [93]

Answer:

176 = 80% Extra: If you need 100% its, 220

Step-by-step explanation:

99+ 77 is 176

45% + 35% = 80%

7 0

2 years ago

Which equation should be used to graph y=sec^-1(x) on a calculator ?

erastova [34]

Arcsecant or arcsec or sec⁻¹ is an inverse trigonometric function. And many calculators don't have a key for them because they can be calculated with basic trigonometric functions like so:

sec⁻¹(x)=cos⁻¹(1/x).

So the correct answer is the fourth one: y=cos⁻¹(1/x).

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2 years ago

A triangle has two sides of length 17 and 2. What is the largest possible whole number length

ludmilkaskok [199]

Answer:

The largest possible value for the third side is 18.

Step-by-step explanation:

Here, the first side of the triangle = 17

Second side of the triangle = 2

Let us assume the third side of the triangle = m

Now, In any given triangle:

"Sum of any two sides of a triangle is strictly greater than the third side."

⇒ Sum of first side + Sum of second side > Third Side

or, m < 17 + 2

or, m < 19

hence, the largest possible value for m = 18

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2 years ago