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natka813 [3]
3 years ago
9

I need help with this math problem

Mathematics
1 answer:
klemol [59]3 years ago
6 0

Answer:

x = 15

Step-by-step explanation:

The right angle is formed at at the tangent line and the radius

So to solve for the missing angle we can solve for x using the Pythagorean Theorem

The Pythagorean theorem states that the sum of the two legs squared equal the hypotenuse squared

Knowing this we can create an equation to solve for x

12^2+9^2=x^2

now we solve for x

12^2=144\\9^2=81\\81+144=225\\225=x^2\\\sqrt{225} =15\\\sqrt{x^2} =x\\x=15

So we can conclude that x = 15

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Solve (10b+7b^2-6b^3)-(12b^2-3b^3)
MrRa [10]

Answer:

-3b³ - 5b² + 10b

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define Expression</u>

(10b + 7b² - 6b³) - (12b² - 3b³)

<u>Step 2: Simplify</u>

  1. Distribute negative:                   10b + 7b² - 6b³ - 12b² + 3b³
  2. Combine like terms (b³):            -3b³ + 10b + 7b² - 12b²
  3. Combine like terms (b²):            -3b³ - 5b² + 10b
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3 years ago
Cecilia created 2.5 liters of a chemical mixture for an experiment. Saline solution accounted for 12.5% of the mixture. How many
tatyana61 [14]
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Write an equation for the line on the graph below:
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This line is a horizontal line, so it has an equation y=n, where n is a number.

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3 0
3 years ago
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jeka94

Answer:

  • plane: 550 mph
  • wind: 50 mph

Step-by-step explanation:

If p and w represent the speeds of the plane and wind, respectively, the speed into the wind is ...

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And, the speed with the wind is ...

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3 years ago
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