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Arte-miy333 [17]
3 years ago
13

How many real roots and how many complex roots exist for the polynomial

Mathematics
1 answer:
Volgvan3 years ago
8 0

Answer:

D. 4 real roots and 0 complex roots

Step-by-step explanation:

If I assume that the function you are saying is

F(x)=x^4+x^3-5x^2+x-6

There should be up to "4 roots," there can't be more or less than 4 total solutions. First, we need to check how many sign changes are there in this function. There are 3 positive real roots. Now lets check for negative roots.

F(-x)=x^4-x^3-5x^2-x-6

There are is only 1 negative real root. Since we basically have 4 real roots, and the max is 4. There should be 4 real roots and 0 complex roots.

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riadik2000 [5.3K]

Answer:

(A) For each additional hundred dollars spent on advertising, sales are predicted to increase by $2,380.

Step-by-step explanation:

Regression isa statistical equation, denoting relationship between independent (causal) variable(s) & dependent (effected) variable.

y = a <u>+</u> bx

where y = dependent variable, x = dependent variable, a (intercept) = autonomous value of y, b (slope) = change in y due to change in x

Regression equation of independent variable (x) as advertising expenditure & dependent variable (y) sales : y = 24.45 + 2.38x

Sales are in thousands of dollars, advertising expenditure is in hundreds of dollars. So, the interpretations are :

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7 0
3 years ago
4n+12=4 What does n equal?
solong [7]

Answer:

n = -2

Step-by-step explanation:

4n + 12 = 4

Subtract 12 from both sides.

4n = -8

Divide both sides by 4.

n = -2

3 0
2 years ago
Which word describes a triangle with three angles, if each angle measures less than 90°?
NemiM [27]

Answer:

acute triangle

Step-by-step explanation:

A triangle with all angles less than 90 degrees has all angles that are acute.

Acute angles are less than 90 degrees

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3 years ago
Heather opens a bank account with $125. Each week, starting the following week, she deposits $25 into her account.
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Total money in account=125+25n
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Read 2 more answers
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exis [7]
To find perimeter you add up all the sides so 5cm+6cm+17cm+8cm. This will get you 36cm.
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3 years ago
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