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Effectus [21]
3 years ago
7

Which of the following is a root of the polynomial shown below? f(x)=x^3-4x^2-11x+30

Mathematics
2 answers:
Pani-rosa [81]3 years ago
8 0

Answer:

A

Step-by-step explanation:

The answer is A for Apex Precal

Sliva [168]3 years ago
4 0
It is a root of the polynomial if it causes the equation to equal 0.

Let's try each number.

Substituting -3 for x...

(-3)³ - 4(-3)² -11(-3) + 30

-27 - 36 + 33 + 30

0

Therefore, a. -3 is a root to our polynomial.

You could try the rest, but I won't waste time with it. None of the others are roots, and it's multiple choice which means usually just one answer.
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in a test consisting of 90 questions, Ama answered 75% of the first 40 questions correctly. If she had to get a score of 80% in
Shalnov [3]

Answer:

total question =90

she obtained 75% of first 40 questions

  1. No. of question she got correct in first 40 = 75% * 40 = 30

2. in order to get 80% out of 90,

the no. of questions got correct by Ama = 80% * 90 = 72

3. As she already got 30 c0rrect in first 40 questions, the number of question she needs correct for remaining 50 = (72-30) = 42

percentage = 42/50*100% = 84%

3 0
3 years ago
Gente como resolver problemas sobre sistemas lineares ?? me
Bond [772]
3x+5y=16 is linear equation........
5 0
3 years ago
Can you please help me
FromTheMoon [43]

Answer:

9

Step-by-step explanation:

most accurate answer if tax was added it would be about 10 added to the fee when u do the math so the answer is 9

7 0
2 years ago
Read 2 more answers
In 2014, a toy store sold 12,823 stuffed animals. In 2015, the toy store sold 24,290 more stuffed animals than it did in 2014. T
Montano1993 [528]

Answer:

i say 24,890

Step-by-step explanation:

4 0
3 years ago
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LA = 5x -5<br> B = 3 + 13<br> B<br> Solve for r and then find the measure of B:
topjm [15]

Answer:

x = 9º

∠B = 40º

Step-by-step explanation:

5x-5º = 3x+13º

<em>[add 5 to both sides]</em>

5x = 3x+18º

<em>[subtract 3x from both sides]</em>

2x = 18º

<em>[divide each side by 2]</em>

x = 9º

/ / / / / / / / / / / / / / / / / / /

3x+13º = 3(9º)+13º=27º+13º = 40º

6 0
3 years ago
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