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Murrr4er [49]
3 years ago
14

What is x? -2.5x- 2=18​

Mathematics
1 answer:
snow_tiger [21]3 years ago
3 0

Answer:

x = -8

Step-by-step explanation:

-2.5x - 2 = 18.

Add 2 to both sides.

-2.5x = 20.

Divide both sides by -2.5.

x = -8

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Given the function ƒ(x) = 3x2 − 5x + 10, find ƒ(4).
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The right answer is Option B: f(4) = 38

Step-by-step explanation:

Given function is;

f(x) = 3x^2-5x+10

For finding f(4), we will put x=4 in the given function; therefore

Putting x=4 in given function,

f(4) =3(4)^2-5(4)+10\\f(4) =(3*16)-20+10\\f(4) = 48-10\\f(4) = 38

Therefore;

f(4) = 38 in the given function.

The right answer is Option B: f(4) = 38

Keywords: function, addition

Learn more about functions at:

  • brainly.com/question/12896802
  • brainly.com/question/12973601

#LearnwithBrainly

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bogdanovich [222]

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Effectus [21]

Answer:

The value of the third side  c = 12.52

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given thatΔABC is a right angle triangle

                                     AB =  a = 6

                                     BC = a =11

                         Find    AC = ?

<u><em>Step(ii):-</em></u>

By using Pythagorean theorem

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                       ⇒  c² = √157

                           c = 12.52

The value of the third side  c = 12.52

                                           

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