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Simora [160]
4 years ago
8

Which topic could be investigated using the scientific method, with the investigation organized around a appropriate research qu

estion?
A) moral values
B) the supernatural
C) the natural world
D) personal preference
Mathematics
2 answers:
Leokris [45]4 years ago
6 0
The answer is C. A and B are not physically observable by Science, and D is obviously incorrect.
Ainat [17]4 years ago
4 0
The correct answer is 
C) The natural world
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Maurinko [17]

if you add 2 negatives together you get a smaller number,(farther away from zero) therefore, -3+(-1)= -4

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4 years ago
A plumber charges $25 to come to a home, and $50 per hour for a repair. Which equation gives the total cost, y, for a repair tha
Dmitry_Shevchenko [17]
The answer is b)

15*x+25=y
4 0
3 years ago
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Solve:<br> 2(2x + 3) = -6(x + 9)
jek_recluse [69]

Answer:

The answer is x = -6

Step-by-step explanation:

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3 years ago
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Find the slope and the y-intercept of the of the linear equation.<br><br> 0=2-3y+12x
andrew11 [14]

The slope is 4 and the y-intercept is \frac{2}{3}

Step-by-step explanation:

The general form of a linear equation is Ax + By + C = 0, where

  • A is the coefficient of x
  • B is the coefficient of y
  • C is the numerical term
  • A, B, and C are integers
  • The slope of the line = \frac{-A}{B}
  • The y-intercept = \frac{-C}{B}

∵ The linear equation is 0 = 2 - 3y + 12x

- Switch the two sides and arrange the terms as the general

   form above

∴ 12x - 3y + 3 = 0

∴ A = 12

∴ B = -3

∴ C = 2

∵ The slope of the line = \frac{-A}{B}

- Substitute A by 12 and B by -3

∴ The slope of the line = \frac{-12}{-3}

∴ The slope of the line = 4

∵ The y-intercept = \frac{-C}{B}

- Substitute C by 2 and B by -3

∴ The y-intercept = \frac{-2}{-3}

∴ The y-intercept = \frac{2}{3}

The slope is 4 and the y-intercept is \frac{2}{3}

Learn more:

You can learn more about the linear equation in brainly.com/question/4819659

#LearnwithBrainly

4 0
3 years ago
Perimeter, Area And Volume
san4es73 [151]

Answer:

A ≈ 1900.7 m²

Step-by-step explanation:

The area (A) of the race track is

area of outer circle - area of inner circle

= πR² - πr²

= π × 63² - π × 58²

= π (63² - 58² )

= π(3969 - 3364)

= π × 605

≈ 1900.7 m² ( to 1 dec. place )

6 0
3 years ago
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