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Ostrovityanka [42]
3 years ago
12

Find the sum of 4x^3+2x^2-4x+3 and 7x^3-4x^2+7x+8

Mathematics
2 answers:
Triss [41]3 years ago
6 0

Answer: 3a^3 + 4a^2 - a + 5

Step-by-step explanation:

1. (4x^3 + 2x^2 - 4x + 3) + (7x^3 - 4x^2 + 7x + 8)  

combine terms with same exponent;  

(4x^3 + 7x^3) + (2x^2 - 4x^2) + (-4x + 7x) + (3 +8)  

= 11x^3 + (-2x^2) + 3x + 11  

= 11x^3 - 2x^2 + 3x +11.............final answer  

2. 3a^3 + 8a - 6 and 4a^2 -9a +11  

combine terms with same exponent;  

3a^3 + 4a^2 + (8a - 9a) + (-6 + 11)  

= 3a^3 + 4a^2 + (-a) + 5  

= 3a^3 + 4a^2 - a + 5...........final answer

Alchen [17]3 years ago
4 0

The sum means addition.

Add  the like terms together.

4x^3+2x^2-4x+3

+ 7x^3-4x^2+7x+8

4x^3 + 7x^3 = 11x^3

2x^2 + -4x^2 = -2x^2

-4x +7x = 3x

3 +8 = 11

The answer is : 11x^3 - 2x^2 + 3x + 11

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The two person will pay the same amount of money when they both watch 9 hockey games.

<h3>How to find the equation and use it to find cost?</h3>

A hockey season ticket holder pays $99.00 for her tickets plus $3.00 for a program for each game. Therefore,

y = 99 + 3x

where

y = total cost

x = number of game

A second person pays $14.00 for a ticket to every game but doesn't buy programs. Therefore,

y = 14x

The number of games they will have the same amount is as follows:

99 + 3x = 14x

99  = 14x - 3x

99 = 11x

x = 99 / 11

x = 9

Therefore, they will have the same amount when they watch 9 games.

learn more on equation here: brainly.com/question/14058936

4 0
2 years ago
Describe the solutions of each inequality in words:<br><br> 2m ≥ 6
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Answer:

Step-by-step explanation:

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8 0
3 years ago
Analyze the key features of the graph f(x) = 1/x+3 -2
tia_tia [17]
<h2>Explanation:</h2><h2></h2>

Here we have the following rational function:

f(x) = \frac{1}{x+3} -2

So the graph of this function is shown in the First Figure below. Let's define another function which is a parent function:

g(x)=\frac{1}{x}

Whose graph is shown in the second figure below. So we can get the graph of f from the graph of g this way:

Step 1. Shift the graph 3 units to the left:

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Step 2. Shift the graph 2 units down:

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Finally, the features of the graph of f are:

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8 0
3 years ago
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Answer:

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5 0
3 years ago
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Answer:

A. 165 ft²

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8 0
3 years ago
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