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3 years ago

Use the x-intercept method to find all real solutions of the equation. x^3-9x^2+11x+21=0

Mathematics

1 answer:

IgorLugansk [536]3 years ago

7 0

We must graph y=x^3-9x^2+11x+21. Please, see the attached file.
Then we see were the graph cuts the x-axis, and these values of x are the real solutions of the given equation:

The real solutions of the given equation are:x = -1, 3, and 7

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2 years ago

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Answer:

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2 years ago

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Marianna [84]

Answer:

Step-by-step explanation:

x-y^2

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2 years ago

A town has 100 homes in it. According to a census, the actual distribution of pets in these homes gives a median of 0.8 pets and

stellarik [79]

The nest answer would be c> hope this helps

6 0

3 years ago

Read 2 more answers

Answer Is not C please help

Katyanochek1 [597]

Answer:

Step-by-step explanation:

Well since it is arthimetic sequence we know the formula

We know d is difference between second term and first so it will be -5- (-12)= -5+12= 7

$a_{n}= a _{1}+ d (n-1) \\a_{n}= -12+7(n-1)\\a_{n} = -12+7n-7\\a_{n}= 7n-19$

the domain of this is 1,2,3,4.......

range is -12,-5,2,9.......

Therefore answer is B.

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2 years ago