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jarptica [38.1K]
3 years ago
9

Add (2x^3+5x−16)+(4x^3−10x^2−2x)

Mathematics
1 answer:
creativ13 [48]3 years ago
6 0

Answer:

Hi there!

Your answer is:

6x^3 -10x^2 +3x -16

Step-by-step explanation:

2x^3 +5x -16 +4x^3 -10x^2 -2x

Combine like terms

6x^3 -10x^2 +3x -16

Hope this helps!

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A circle with radius 3 has a sector with a central angle of 60.<br> What is the area of the sector?
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Answer:

Sector area = (central angle / 360) * PI * radius^2

Sector area = (1/6) * PI * 3^2

Sector area = 9/6 * PI

Sector area = 4.7123889804

Step-by-step explanation:

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Type the correct answer in each box. use numerals instead of words. students in a reading class have three options for their boo
Alexus [3.1K]

The answers to the questions on how she would use the colored chips are given here:

  • brochure 4 blue chips
  • writing a new article 6 yellow chips
  • designing a computer presentation 10 red chips

<h3>How to solve for the values</h3>

For the first percentage

20 / 100 = x/20

= 20 * 20 = 100x

400 = 100x

divide through by 100

x = 400/100

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For the second percentage

30/100 = x/20

600 = 100x

x = 600/100

x = 6

For the last

50/100 = x/20

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x = 10

The proof is that 6 + 4 + 10 still gives us 20

Read more on percentages here: brainly.com/question/24877689

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4 0
2 years ago
What is the solution set of these system5x-2y=17 and 4x-7=13?
MatroZZZ [7]

Answer:

x=5

y=4

Step-by-step explanation:

Step 1:

Let us solve for <em>x</em> using the 4x-7=13 equation by <u>isolating terms containing the variable</u>:

4x-7=13\\4x=20\\\fbox{x=5}

Great! <em>x</em> is 5... let's find <em>y</em>.

Step 2:

Since we know the value of <em>x</em>, we can use what we know to find <em>y</em> using the <u>other equation</u>:

5x-2y=17\\

<em>Given that x=5, we can </em><u><em>replace</em></u><em> x with 5</em>.

5*5-2y=17\\25-2y=17\\2y=8\\\\\fbox{y=4}

<em>I hope this helps! Let me know if you have any questions :)</em>

3 0
2 years ago
Change the following decimal numbers to percents. .25 .278 2.9 3.0 0.67
umka2103 [35]
25=2,500, 278= 27800%, 2.9=290, 3.0=300, 0.67= 67
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