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2 years ago

Add (5x^4+ 2x^3– 1)+(3x² – 3x + 3)

Mathematics

2 answers:

jolli1 [7]2 years ago

8 0

Answer:

5x^4+ 2x^3+3x² – 3x + 2

Step-by-step explanation:

(5x^4+ 2x^3– 1)+(3x² – 3x + 3)

Combine like terms

5x^4+ 2x^3+3x² – 3x + 3– 1

The only like terms are the constants

5x^4+ 2x^3+3x² – 3x + 2

olga2289 [7]2 years ago

7 0

Answer:

5x^4 + 2x^3 -3x^2 - 3x + 2

Step-by-step explanation:

Expanding out the brackets:

5x^4 + 2x^3 - 1 + 3x^2 - 3x + 3.

Simplifying gives

5x^4 + 2x^3 - 3x^2 - 3x + 2

Remember you can only add x's together if they have the same power. This makes sense why you can 2 to -1 because they are both the same power of x, x^0. (which equals 1 by default)

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Given: -1/2x > 6.<br><br>Choose the solution set.

elena55 [62]

Answer:

x <-12

Step-by-step explanation:

-1/2x > 6

Multiply each side by-2. This will flip the inequality

-2 *-1/2x < 6*-2

x <-12

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2 years ago

An angry student murdered Tommy the Turtle near the northern fence of the park. Using yellow tape,Ranger Dave is marking off a r

pishuonlain [190]

Answer:

60ft

Step-by-step explanation:

Let's x, y be the width and length of the surrounding rectangle. Since the area is 450 sq feet, this means xy = 450 or y = 450/x

The perimeter of this rectangle is (since there are 3 sides only)

f(x,y) = 2x + y

This is something we need to minimize. We can start by substituting y = 450/x

f(x) = 2x + 450/x

Let's take the first derivative of this function and set it to 0

$f'(x) = 2 - \frac{450}{x^2} = 0$

$2 = \frac{450}{x^2}$

$x^2 = 450 / 2 = 225$

$x = \sqrt{225} = 15ft$

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so the minimum perimeter that needs taping over is

f(x,y) = 2x + y = 2*15 + 30 = 60ft

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3 years ago

Jeff and jill are collecting coats for kids. They hope to collect 20 coats per day to reach their goal. They have already collec

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None of the answers are correct in this question

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2 years ago

2x + 3 + x2; for x = 4

Irina-Kira [14]

Answer:

Pretty sure it's 27

Step-by-step explanation:

(2 4= 8) + 3 (4 4= 16)=27

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2 years ago

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Answer:

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Step-by-step explanation:

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