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Lina20 [59]
4 years ago
9

What is 7x+3x+8x=180

Mathematics
1 answer:
Anna35 [415]4 years ago
3 0

Answer:

x = 10

Step-by-step explanation:

7x + 3x + 8x = 180

Simplify:

18x = 180

Divide both sides by 18:

x = 10

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State the the roots of y=x^2+8x
Likurg_2 [28]

Answer:

The roots of the given equation are x = 0 and x = -8.

General Formulas and Concepts:

<u>Algebra I</u>

Terms/Coefficients

  • Factoring/Expanding

Quadratic Equations

  • Solving quadratic equations

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify.</em>

y = x² + 8x

<u>Step 2: Find Roots</u>

  1. [Quadratic] Factor:                                                                                          y = x(x + 8)
  2. [Quadratic] Set up [Solve]:                                                                             0 = x(x + 8)
  3. [Quadratic] Define:                                                                                         x = 0, -8

∴ the roots of the quadratic equation y = x² + 8x is equal to 0 and -8.

---

Topic: Algebra I

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3 years ago
Your buying candy for the next family get together. Lollipops cost $8 per bag . Chocolates cost $7 per bag. Smarties are $5 per
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Please answer the full question and make sure to specify which triangle is equal to triangle AMN and by which of the following r
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Answer:

See Below.

Step-by-step explanation:

<u>Statements:</u>                                      <u>Reasons:</u>

<u />1)\text{ } \overline{MN} \parallel \overline{AO}\text{ and } \overline{AM} \parallel \overline{ON}              Given

2)\text{ } AMNO\text{ is a parallelogram}             Definition of a parallelogram

3)\text{ } \overline{AM}\cong\overline{ NO}                                     Opposite sides of a parallelogram are ≅.

4)\text{ } \overline{MN }\cong\overline{ OA}                                     Opposites sides of a parallelogram are ≅.

5)\text{ } \overline{AN}\cong\overline{AN}                                       Reflexive Property.

6)\text{ } \Delta AMN\cong \Delta NOA                          SSS Congruence.

Notes: AAA and SAA are not theorems of congruence.

4 0
3 years ago
What is the slope of the line through (-1, -7) and (3,9)?
Makovka662 [10]

Answer:

B (4)

Step-by-step explanation:

\frac{9+7}{3+1} = \frac{16}{4} = \frac{4}{1} = 4

5 0
3 years ago
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How to find the area of a half circle ?
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To work out the area of a semicircle<span> you can use the formula A = (Pi*r^2)/2. This is because the </span>area<span> of a full</span>circle<span> is A = Pi*r^2 and a </span>semicircle<span> is </span>half<span> the </span>area<span> of a full</span>circle<span> so you divide this by 2. Just be careful to substitute the radius into the formula and not the diameter!
</span>
6 0
3 years ago
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