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ale4655 [162]
3 years ago
8

Which of the following is a polynomial with roots: − square root of 5 , square root of 5 , and 3? (6 points)

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0

Let's check the first polynomial , that is

P(x)= x^3 -3x^2 -5x+15

We need to factor it first and for that we have to do grouping and factoring .

P(x) = x^2(x-3)-5(x-3) \\ P(x) = (x^2 -5)(x-3)

TO find the roots, we need to set P(x) to 0, that is

(x^2 -5)(x-3)=0 \\ x^2 - 5= 0 , x-3 =0 \\ x^2 = 5 , x=3 \\ x = \pm \sqrt{5} , x=3

SO the correct option is A .

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9x43=9x(40+3)=(9x )+(9x3)= +27=
denis-greek [22]

Answer:

387, or you can do it another way in the problem if you like/.

Step-by-step explanation:

3x9=27

4x9=36

36+2=38

387

8 0
3 years ago
Please answer this question
Papessa [141]
I don’t get it either
4 0
2 years ago
I will attach a screenshot of the math problem.
Alekssandra [29.7K]

Complete the table for the function y = 0.1^x

The first step: plug values from the left column into the ‘x’ spot in the formula <u>y=0.1^x</u>.

* 0.1^-2 : We can eliminate the negative exponent value by using the rule a^-1 = 1/a. Keep this rule in mind for future problems. (0.1^-2 = 1/0.1 * 0.1 = 100).

* 0.1^-1 = 1/0.1 = 10

* 0.1^0 = 1 : (Remember this rule: a^0 = 1)

* 0.1^1 = 0.1

Our list of values: 100, 10, 1, 0.1

Now, we can plug these values into your table:

\left[\begin{array}{ccc}x&y\\2&10\\1&10\\0&1\\1&0.1\end{array}\right]

The points can now be graphed. I will paste a Desmos screenshot; try to see if you can find some of the indicated (x,y) values: [screenshot is attached]

I hope this helped!

7 0
2 years ago
the perimeter of a rectangle is 48 in. if the length is twice the width, what is the length of the rectangle?
konstantin123 [22]
16. hope that helps. :)

6 0
3 years ago
What are the divisible number(s) for 430?
ollegr [7]

Answer:

The numbers that 430 is divisible by are 1, 2, 5, 10, 43, 86, 215, and 430.

7 0
2 years ago
Read 2 more answers
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