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Valentin [98]
2 years ago
10

4x-8=12 when x=-2 verify the solution of the equation and explain.

Mathematics
1 answer:
mojhsa [17]2 years ago
7 0

Answer:

Solve in terms of the arbitrary variable x . x = 5 5 = − 2

Step-by-step explanation:

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Angle ACB And Angle ECD

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Geometry problem help, will reward brainly! both dont have to be solved, but id really appreciate it.
Anastaziya [24]

Answer:

  • height: 8 m
  • slant height: 5 in

Step-by-step explanation:

The parameter of interest can be found by putting the given values into the appropriate volume or area formula for a pyramid, then solving for the unknown. The relevant formulas are ...

  V = 1/3s²h . . . . . s is the base length; h is the height

  A = s(s +2h) . . . . s is the base length; h is the slant height

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<h3>height given volume</h3>

Using the given values for the volume and the length of the base, the formula becomes ...

  V = 1/3s²h

  96 m³ = 1/3(6 m)²h . . . . . . . . . . use the given values for V, s

  (96 m³)/(12 m²) = 8 m = h . . . . . divide by the coefficient of h

The height of the pyramid is 8 meters.

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<h3>slant height given area</h3>

Using the given values for area and the length of the base, the formula becomes ...

  A = s(s +2h)

  47.25 in² = (3.5 in)(3.5 in + 2h) . . . . use the given values for A, s

  13.5 in = 3.5 in + 2h . . . . . . . . . . . divide by 3.5 in

  10 in = 2h . . . . . . . . . . . . . . . . . subtract 3.5 in

  5 in = h . . . . . . . . . . . . . . . . divide by 2

The slant height of the pyramid is 5 inches.

5 0
2 years ago
What does 8.4 10^5-7.7 10^4 equal?
Alex

Answer:

\huge\boxed{763,000=7.63\cdot10^5}

Step-by-step explanation:

\bold{METHOD\ 1:}\\\\8.4\cdot10^5-7.7\cdot10^4=8.4\cdot100,000-7.7\cdot10,000\\\\=840,000-77,000=763,000\\\\\bold{METHOD\ 2:}\\\\8.4\cdot10^5-7.7\cdot10^4=8.4\cdot10^{1+4}-7.7\cdot10^4\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=8.4\cdot10^1\cdot10^4-7.7\cdot10^4=84\cdot10^4-7.7\cdot10^4\\\\\text{use the distributive property}:\qquad a(b+c)=ab+ac\\\\=(84-7.7)\cdot10^4=76.3\cdot10^4=7\underbrace{.63}_{\leftarrow1}\cdot10^{4+1}=7.63\cdot10^5

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3 years ago
Locate the point on the line segment between A(3,-5) and B(13,-15) given that the point is 4/5 of the way from A to B. Show your
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(-2)+{-2)=4 given that point 4/5
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