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kherson [118]
3 years ago
11

7. Subtract the polynomials: 5x2 + 4x + 1 and x2 + 3x - 4

Mathematics
2 answers:
rodikova [14]3 years ago
5 0

Answer: 4x^​2+x+5

Step-by-step explanation:

5x2 + 4x + 1 - (x2 + 3x - 4)

5x^​2+4x+1−x^​2−3x+4

(5x^​2​​−x^​2​)+(4x−3x)+(1+4)

4x^​2+x+5

Hope this helps, HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

Colt1911 [192]3 years ago
3 0

Answer:

4x²+x+5.

Step-by-step explanation:

5x²+4x+1-(X²+3x-4).

5x²+4x+1-x²-3x+4.

5x²-x²+4x-3x+1+4.

4x²+x+5.

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The total cost of producing a type of tractor is given by C(x)=11000−20x+0.02x2, where x is the number of tractors produced. How
marissa [1.9K]

Answer:

Step-by-step explanation:

You need to complete the square.

C(x) = 0.02(x^2 - 1000x  ...)  + 11000

C(x) = 0.02 (x^2 - 1000x + 500^2) + 11000 - 5000

C(x) = 0.02 (x^2 - 1000x + 500^2) + 6000

C(x) = 0.02(x - 500)^2 + 6000

Now if you look at the answer you will find that the square is completed. That means that number of tractors you could produce is 500 at a cost of 6000

There is a flow to this question that you may have trouble understanding.

First of all the 500^2. That comes from taking 1/2 of 1000 and squaring it. That's what you need to complete the square.

Bur that is not what you have adding into the equation. Remember that there is a 0.02 in front of the brackets.

500^2 = 250000

0.02 * 250000 = 5000

So that number must be subtracted to make the square = 0. When you remove the brackets, you should get 11000 all in all.

So what you have outside the brackets is 11000 - 5000 = 6000

The rest is just standard for completing the square.

5 0
2 years ago
Which statement is true about the parts of this expression? 5/6 + 1/4x - y The constant is 5/6. The only coefficient is 1/4. The
andriy [413]

Answer:


Step-by-step explanation:

1/4 is the coefficient

x and y is the variables

5/6 is the constant but there could be a  equal to zero on the end giving you another constant

Therefor the only true statement is The only coefficient is 1/4.  

4 0
4 years ago
Help on this This question plz
mr Goodwill [35]
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Answer
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3 years ago
Find the surface area of a cylinder
jeka57 [31]

Answer:

(REDACTED)

Step-by-step explanation:

First find the area of the circle on top using (REDACTED). Then multiply it by the (REDACTED) then you get the simple answer of (REDACTED).

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3 years ago
A tortoise is walking in the desert. It walks at a speed of 7 meters per minute for 8.96 meters. For how many minutes does it wa
Licemer1 [7]

Answer:

1.28 minutes

Step-by-step explanation:

Given data

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We know that the expression for the Speed, Distance, and time is given as

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7 0
3 years ago
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